Best Voltage Testers. Deegoo-FPV brand. New releases 2021

UM34C USB 3.0 Multimeter USB Bluetooth Voltmeter Ammeter and USB Electronic Load Tester Resistor USB Voltage Current Battery Power Capacity Charger Temperature Load Meter Tester (UM34C+LD25)

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UM34C USB 3.0 Multimeter USB Bluetooth Voltmeter Ammeter and USB Electronic Load Tester Resistor USB Voltage Current Battery Power Capacity Charger Temperature Load Meter Tester (UM34C+LD25)

Current price: 34.99 USD


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  • LD25 4-bit led digital display tester have some Advantage:1.Display upgrade;2.Protection upgrade;3.Interface upgrade;4.Cooling upgrade;5.Precision multi-turn potentiometer;6. Intelligent temperature control fan.It is suitable for measuring the output current capability of the charger, using the bulk aging test of the charger factory, and measuring the quality of the Micro USB charging cable and the Type-C charging cable.
  • Note: LD25 USB Electronic Load Tester is not reverse polarity protection, the input polarity can not be reversed, otherwise the product is permanently damaged and cannot be repaired!
  • There are some incompatibility problem between some android phone and our bluetooth board, Please purchase carefully, it compatible with Samsung NOTE8 / S8. For Android and IOS APP:A:APP only support android 5.0 and above,and IOS 8 and above.B:Allow APP to do in the background, not be cleaned.C: allow APP self-starting.D:Allow APP stay after screen locked,not be cleaned.E.Type-c port is just to measure type-c cable,not support all Typ-c quick charge and PD charger;not trigger.
  • UM34C Android Phone APP Control.No need professionalwiring,simply the operation,only need to download APP.Real detect charging status of USB power supply,Voltage,Current,Capacity,Temperature and etc.other multi-function multi-data measurement display,high precision comparable professional equipment.At a gance,more convenient.

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AT34 USB 3.0 Tester Power Meter 30V 4A USB Voltage Digital Multimeter Current Tester Voltmeter Ammeter IPS Color Display Capacity Power

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AT34 USB 3.0 Tester Power Meter 30V 4A USB Voltage Digital Multimeter Current Tester Voltmeter Ammeter IPS Color Display Capacity Power

Current price: 12.59 USD


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Height: 0.47 Inches

Length: 2.52 Inches

Width: 0.87 Inches

  • LD25 4-bit led digital display tester have some Advantage:1.Display upgrade;2.Protection upgrade;3.Interface upgrade;4.Cooling upgrade;5.Precision multi-turn potentiometer;6. Intelligent temperature control fan.It is suitable for measuring the output current capability of the charger, using the bulk aging test of the charger factory, and measuring the quality of the Micro USB charging cable and the Type-C charging cable.
  • Note: LD25 USB Electronic Load Tester is not reverse polarity protection, the input polarity can not be reversed, otherwise the product is permanently damaged and cannot be repaired!
  • There are some incompatibility problem between some android phone and our bluetooth board, Please purchase carefully, it compatible with Samsung NOTE8 / S8. For Android and IOS APP:A:APP only support android 5.0 and above,and IOS 8 and above.B:Allow APP to do in the background, not be cleaned.C: allow APP self-starting.D:Allow APP stay after screen locked,not be cleaned.E.Type-c port is just to measure type-c cable,not support all Typ-c quick charge and PD charger;not trigger.
  • UM34C Android Phone APP Control.No need professionalwiring,simply the operation,only need to download APP.Real detect charging status of USB power supply,Voltage,Current,Capacity,Temperature and etc.other multi-function multi-data measurement display,high precision comparable professional equipment.At a gance,more convenient.
  • Measure the quality of the charger: connect the same load, compare the no-load and the load, the greater the voltage drop, the worse the charger capacity is, the worse the quality; the voltage drop is not obvious or the voltage rises (leisure loss) Compensation function) The better the load capacity of this charger, the better the quality.
  • Power-off storage, data is guaranteed: AT34 has power-off storage function, which can store capacity and energy data when the mobile power is cut off, which is convenient for subsequent viewing and convenient for capacity energy measurement of mobile power.Note: Other USB testers that do not have a power-down storage function cannot test capacity and energy.
  • The AT34 uses a 0.96-inch IPS high-definition color LCD display to display the state of charge of the appliance, voltage, current, capacity, energy, power, equivalent impedance, temperature and other indicators at a glance. 160 degree wide viewing angle, high brightness and long working life. Fast charge recognition, widely compatible: AT34 supports QC2.0, QC3.0,for i Phone 2.4A/2.1A/1A/0.5A, for Andriod DCP, fast charge protocol identification, let you know the state of charge of the phone.
  • 4-bit accuracy for more accurate measurements; Measure the load equivalent impedance and power; Thermometer function, Celsius and Fahrenheit free switching: Using high-precision thermistor sensor; USB 3.0 interface: Compatible with USB 2.0, support high current test, support USB3.0 interface mobile hard disk and U disk test.

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TC64 Type-C USB Voltage Tester Multimeter Voltmeter Ammeter Tester 0.96 inch IPS HD Display Multifunction Tester Type-C 0-4A 3.7-30V USB Current Power Meter Tester Ammeter Voltage Current Meter

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TC64 Type-C USB Voltage Tester Multimeter Voltmeter Ammeter Tester 0.96 inch IPS HD Display Multifunction Tester Type-C 0-4A 3.7-30V USB Current Power Meter Tester Ammeter Voltage Current Meter

Current price: 15.99 USD


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  • LD25 4-bit led digital display tester have some Advantage:1.Display upgrade;2.Protection upgrade;3.Interface upgrade;4.Cooling upgrade;5.Precision multi-turn potentiometer;6. Intelligent temperature control fan.It is suitable for measuring the output current capability of the charger, using the bulk aging test of the charger factory, and measuring the quality of the Micro USB charging cable and the Type-C charging cable.
  • Note: LD25 USB Electronic Load Tester is not reverse polarity protection, the input polarity can not be reversed, otherwise the product is permanently damaged and cannot be repaired!
  • There are some incompatibility problem between some android phone and our bluetooth board, Please purchase carefully, it compatible with Samsung NOTE8 / S8. For Android and IOS APP:A:APP only support android 5.0 and above,and IOS 8 and above.B:Allow APP to do in the background, not be cleaned.C: allow APP self-starting.D:Allow APP stay after screen locked,not be cleaned.E.Type-c port is just to measure type-c cable,not support all Typ-c quick charge and PD charger;not trigger.
  • UM34C Android Phone APP Control.No need professionalwiring,simply the operation,only need to download APP.Real detect charging status of USB power supply,Voltage,Current,Capacity,Temperature and etc.other multi-function multi-data measurement display,high precision comparable professional equipment.At a gance,more convenient.
  • Measure the quality of the charger: connect the same load, compare the no-load and the load, the greater the voltage drop, the worse the charger capacity is, the worse the quality; the voltage drop is not obvious or the voltage rises (leisure loss) Compensation function) The better the load capacity of this charger, the better the quality.
  • Power-off storage, data is guaranteed: AT34 has power-off storage function, which can store capacity and energy data when the mobile power is cut off, which is convenient for subsequent viewing and convenient for capacity energy measurement of mobile power.Note: Other USB testers that do not have a power-down storage function cannot test capacity and energy.
  • The AT34 uses a 0.96-inch IPS high-definition color LCD display to display the state of charge of the appliance, voltage, current, capacity, energy, power, equivalent impedance, temperature and other indicators at a glance. 160 degree wide viewing angle, high brightness and long working life. Fast charge recognition, widely compatible: AT34 supports QC2.0, QC3.0,for i Phone 2.4A/2.1A/1A/0.5A, for Andriod DCP, fast charge protocol identification, let you know the state of charge of the phone.
  • 4-bit accuracy for more accurate measurements; Measure the load equivalent impedance and power; Thermometer function, Celsius and Fahrenheit free switching: Using high-precision thermistor sensor; USB 3.0 interface: Compatible with USB 2.0, support high current test, support USB3.0 interface mobile hard disk and U disk test.
  • Note: The product current only flow from male connector to female connector(one-way current), the reverse is still energized but the current is shown to be 0. If you use our TC64 meter to connect phone, you must have PD charger , or have converter cable.
  • APPLICATION: Widely used in the quality inspection of type-c port 3C digital peripheral products and protect the charging equipment.-----Laptop, mobile, power bank, charger, car charger, data cable, electronic load.
  • FEATURE: Measure Load Equivalent Impedance And Power; Measure the Quality of the Charger; Human-Computer Interaction Interface---Screen off function, temperature unit switch, data group switch, data of data group clean, screen display rotation; Small Size Big Energy.
  • FEATURE: High Definition Display---0.96 inch IPS HD color LCD display with a 160-degree wide view; Quick Charge Identification---QC2.0,QC3.0,A-p-pp-l-e 2.4a/2.2a/1.1a/0.5a, Android DCP, Sann-sung quick chasrging protocols; 4 Bits Measurement Accuracy---Unique precision algorithm, higher accuracy,smaller data detection error; Power Off Storage---Data Guaranteed.

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USB Tester UM25C USB Meter Tester,Voltage Current Bluetooth Battery Power Charger Voltmeter Ammeter Multimeter Tester, 1.44 Inch Color LCD Display USB 2.0 Type- C Cable Resistance Load Impedance Mete

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USB Tester UM25C USB Meter Tester,Voltage Current Bluetooth Battery Power Charger Voltmeter Ammeter Multimeter Tester, 1.44 Inch Color LCD Display USB 2.0 Type- C Cable Resistance Load Impedance Mete

Current price: 28.49 USD


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  • LD25 4-bit led digital display tester have some Advantage:1.Display upgrade;2.Protection upgrade;3.Interface upgrade;4.Cooling upgrade;5.Precision multi-turn potentiometer;6. Intelligent temperature control fan.It is suitable for measuring the output current capability of the charger, using the bulk aging test of the charger factory, and measuring the quality of the Micro USB charging cable and the Type-C charging cable.
  • Note: LD25 USB Electronic Load Tester is not reverse polarity protection, the input polarity can not be reversed, otherwise the product is permanently damaged and cannot be repaired!
  • There are some incompatibility problem between some android phone and our bluetooth board, Please purchase carefully, it compatible with Samsung NOTE8 / S8. For Android and IOS APP:A:APP only support android 5.0 and above,and IOS 8 and above.B:Allow APP to do in the background, not be cleaned.C: allow APP self-starting.D:Allow APP stay after screen locked,not be cleaned.E.Type-c port is just to measure type-c cable,not support all Typ-c quick charge and PD charger;not trigger.
  • UM34C Android Phone APP Control.No need professionalwiring,simply the operation,only need to download APP.Real detect charging status of USB power supply,Voltage,Current,Capacity,Temperature and etc.other multi-function multi-data measurement display,high precision comparable professional equipment.At a gance,more convenient.
  • Measure the quality of the charger: connect the same load, compare the no-load and the load, the greater the voltage drop, the worse the charger capacity is, the worse the quality; the voltage drop is not obvious or the voltage rises (leisure loss) Compensation function) The better the load capacity of this charger, the better the quality.
  • Power-off storage, data is guaranteed: AT34 has power-off storage function, which can store capacity and energy data when the mobile power is cut off, which is convenient for subsequent viewing and convenient for capacity energy measurement of mobile power.Note: Other USB testers that do not have a power-down storage function cannot test capacity and energy.
  • The AT34 uses a 0.96-inch IPS high-definition color LCD display to display the state of charge of the appliance, voltage, current, capacity, energy, power, equivalent impedance, temperature and other indicators at a glance. 160 degree wide viewing angle, high brightness and long working life. Fast charge recognition, widely compatible: AT34 supports QC2.0, QC3.0,for i Phone 2.4A/2.1A/1A/0.5A, for Andriod DCP, fast charge protocol identification, let you know the state of charge of the phone.
  • 4-bit accuracy for more accurate measurements; Measure the load equivalent impedance and power; Thermometer function, Celsius and Fahrenheit free switching: Using high-precision thermistor sensor; USB 3.0 interface: Compatible with USB 2.0, support high current test, support USB3.0 interface mobile hard disk and U disk test.
  • Note: The product current only flow from male connector to female connector(one-way current), the reverse is still energized but the current is shown to be 0. If you use our TC64 meter to connect phone, you must have PD charger , or have converter cable.
  • APPLICATION: Widely used in the quality inspection of type-c port 3C digital peripheral products and protect the charging equipment.-----Laptop, mobile, power bank, charger, car charger, data cable, electronic load.
  • FEATURE: Measure Load Equivalent Impedance And Power; Measure the Quality of the Charger; Human-Computer Interaction Interface---Screen off function, temperature unit switch, data group switch, data of data group clean, screen display rotation; Small Size Big Energy.
  • FEATURE: High Definition Display---0.96 inch IPS HD color LCD display with a 160-degree wide view; Quick Charge Identification---QC2.0,QC3.0,A-p-pp-l-e 2.4a/2.2a/1.1a/0.5a, Android DCP, Sann-sung quick chasrging protocols; 4 Bits Measurement Accuracy---Unique precision algorithm, higher accuracy,smaller data detection error; Power Off Storage---Data Guaranteed.
  • Application in varieties of test:PC/Laptop/Desktop Computer/Mobile Phone/Power Bank/Charger/Discharge Load/Car Charger/Cable Impedance Measurement. Can identify the quality of the charger, charging cable, charging treasure, data cable, the true and false mobile power capacity, from then bid farewell to be fooled, bid farewell to fakes!
  • Support Micro USB or Type C Connector and fast charge mode recognition,It can recognize QC 2.0/3.0,for Apple 2.4A/2.1 A/1A/0.5A,Android DCP,etc....Measure wire resistance by Differential pressure method.Gold-plated USB contacts and upgraded USB male female connector. Widened Power Cord make it own 5A high current.
  • Parameter / Useage: USB 2.0 / 1.44 Inch Full-Color LCD Display Tester, 5-digit High Precision; High Resolution; Foreground and background colors are switched alternately , with 64 options to choose; Upgrading USB A Female and Male Port--It can measure input Voltage, current, power, capacity, energy. Load access detection function, after the tester screen puts off, plug in the load and the screen will light up automatically.
  • Via Bluetooth connection, you can use mobile phone APP or PC control the USB tester. PC software support PC window (Win 7 and above) and Phone Android (Android 5.0 and above, support 14 kinds language, chinese, english and Russia .... )

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USB Power Meter, TC66C USB Tester Bluetooth Type C USB Voltage Meter and Current Tester, 0.96 Inch IPS Color LCD Display Power Tester Multimeter PD Ammeter Voltmeter QC 2.0 3.0

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USB Power Meter, TC66C USB Tester Bluetooth Type C USB Voltage Meter and Current Tester, 0.96 Inch IPS Color LCD Display Power Tester Multimeter PD Ammeter Voltmeter QC 2.0 3.0

Current price: 32.99 USD


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  • LD25 4-bit led digital display tester have some Advantage:1.Display upgrade;2.Protection upgrade;3.Interface upgrade;4.Cooling upgrade;5.Precision multi-turn potentiometer;6. Intelligent temperature control fan.It is suitable for measuring the output current capability of the charger, using the bulk aging test of the charger factory, and measuring the quality of the Micro USB charging cable and the Type-C charging cable.
  • Note: LD25 USB Electronic Load Tester is not reverse polarity protection, the input polarity can not be reversed, otherwise the product is permanently damaged and cannot be repaired!
  • There are some incompatibility problem between some android phone and our bluetooth board, Please purchase carefully, it compatible with Samsung NOTE8 / S8. For Android and IOS APP:A:APP only support android 5.0 and above,and IOS 8 and above.B:Allow APP to do in the background, not be cleaned.C: allow APP self-starting.D:Allow APP stay after screen locked,not be cleaned.E.Type-c port is just to measure type-c cable,not support all Typ-c quick charge and PD charger;not trigger.
  • UM34C Android Phone APP Control.No need professionalwiring,simply the operation,only need to download APP.Real detect charging status of USB power supply,Voltage,Current,Capacity,Temperature and etc.other multi-function multi-data measurement display,high precision comparable professional equipment.At a gance,more convenient.
  • Measure the quality of the charger: connect the same load, compare the no-load and the load, the greater the voltage drop, the worse the charger capacity is, the worse the quality; the voltage drop is not obvious or the voltage rises (leisure loss) Compensation function) The better the load capacity of this charger, the better the quality.
  • Power-off storage, data is guaranteed: AT34 has power-off storage function, which can store capacity and energy data when the mobile power is cut off, which is convenient for subsequent viewing and convenient for capacity energy measurement of mobile power.Note: Other USB testers that do not have a power-down storage function cannot test capacity and energy.
  • The AT34 uses a 0.96-inch IPS high-definition color LCD display to display the state of charge of the appliance, voltage, current, capacity, energy, power, equivalent impedance, temperature and other indicators at a glance. 160 degree wide viewing angle, high brightness and long working life. Fast charge recognition, widely compatible: AT34 supports QC2.0, QC3.0,for i Phone 2.4A/2.1A/1A/0.5A, for Andriod DCP, fast charge protocol identification, let you know the state of charge of the phone.
  • 4-bit accuracy for more accurate measurements; Measure the load equivalent impedance and power; Thermometer function, Celsius and Fahrenheit free switching: Using high-precision thermistor sensor; USB 3.0 interface: Compatible with USB 2.0, support high current test, support USB3.0 interface mobile hard disk and U disk test.
  • Note: The product current only flow from male connector to female connector(one-way current), the reverse is still energized but the current is shown to be 0. If you use our TC64 meter to connect phone, you must have PD charger , or have converter cable.
  • APPLICATION: Widely used in the quality inspection of type-c port 3C digital peripheral products and protect the charging equipment.-----Laptop, mobile, power bank, charger, car charger, data cable, electronic load.
  • FEATURE: Measure Load Equivalent Impedance And Power; Measure the Quality of the Charger; Human-Computer Interaction Interface---Screen off function, temperature unit switch, data group switch, data of data group clean, screen display rotation; Small Size Big Energy.
  • FEATURE: High Definition Display---0.96 inch IPS HD color LCD display with a 160-degree wide view; Quick Charge Identification---QC2.0,QC3.0,A-p-pp-l-e 2.4a/2.2a/1.1a/0.5a, Android DCP, Sann-sung quick chasrging protocols; 4 Bits Measurement Accuracy---Unique precision algorithm, higher accuracy,smaller data detection error; Power Off Storage---Data Guaranteed.
  • Application in varieties of test:PC/Laptop/Desktop Computer/Mobile Phone/Power Bank/Charger/Discharge Load/Car Charger/Cable Impedance Measurement. Can identify the quality of the charger, charging cable, charging treasure, data cable, the true and false mobile power capacity, from then bid farewell to be fooled, bid farewell to fakes!
  • Support Micro USB or Type C Connector and fast charge mode recognition,It can recognize QC 2.0/3.0,for Apple 2.4A/2.1 A/1A/0.5A,Android DCP,etc....Measure wire resistance by Differential pressure method.Gold-plated USB contacts and upgraded USB male female connector. Widened Power Cord make it own 5A high current.
  • Parameter / Useage: USB 2.0 / 1.44 Inch Full-Color LCD Display Tester, 5-digit High Precision; High Resolution; Foreground and background colors are switched alternately , with 64 options to choose; Upgrading USB A Female and Male Port--It can measure input Voltage, current, power, capacity, energy. Load access detection function, after the tester screen puts off, plug in the load and the screen will light up automatically.
  • Via Bluetooth connection, you can use mobile phone APP or PC control the USB tester. PC software support PC window (Win 7 and above) and Phone Android (Android 5.0 and above, support 14 kinds language, chinese, english and Russia .... )
  • Offline Data Storage function. One-key mode to upgrade firmware. Support mobile phone APP(Android+IOS) and PC software to connect and control, wireless connection control(Only for TC66C). Fast load recognition mode: QC2.0, QC3.0, APPLE 2.4A / 2.1A / 1A / 0.5A, Android DCP.
  • Human-Computer Interaction Interface. The voltage,current,capacity,energy, power,equivalent impedance,temperature and other indicators are clear at a glance.
  • Supports Two-way current measurement, forward current and reverse current. 6-digit measurement resolution. Independent power supply, measurement from 0V, low voltage equipment detection necessary.
  • TC66C adopts 0.96 inch LCD HD color IPS screen to display the charging status of the appliance in real time.

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Beffkkip AT34 USB 3.0 Tester Power Meter 30V 4A USB Voltage Digital Multimeter Current Tester Voltmeter Ammeter

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Beffkkip AT34 USB 3.0 Tester Power Meter 30V 4A USB Voltage Digital Multimeter Current Tester Voltmeter Ammeter

Current price: 28.99 USD


Check price and availability


  • LD25 4-bit led digital display tester have some Advantage:1.Display upgrade;2.Protection upgrade;3.Interface upgrade;4.Cooling upgrade;5.Precision multi-turn potentiometer;6. Intelligent temperature control fan.It is suitable for measuring the output current capability of the charger, using the bulk aging test of the charger factory, and measuring the quality of the Micro USB charging cable and the Type-C charging cable.
  • Note: LD25 USB Electronic Load Tester is not reverse polarity protection, the input polarity can not be reversed, otherwise the product is permanently damaged and cannot be repaired!
  • There are some incompatibility problem between some android phone and our bluetooth board, Please purchase carefully, it compatible with Samsung NOTE8 / S8. For Android and IOS APP:A:APP only support android 5.0 and above,and IOS 8 and above.B:Allow APP to do in the background, not be cleaned.C: allow APP self-starting.D:Allow APP stay after screen locked,not be cleaned.E.Type-c port is just to measure type-c cable,not support all Typ-c quick charge and PD charger;not trigger.
  • UM34C Android Phone APP Control.No need professionalwiring,simply the operation,only need to download APP.Real detect charging status of USB power supply,Voltage,Current,Capacity,Temperature and etc.other multi-function multi-data measurement display,high precision comparable professional equipment.At a gance,more convenient.
  • Measure the quality of the charger: connect the same load, compare the no-load and the load, the greater the voltage drop, the worse the charger capacity is, the worse the quality; the voltage drop is not obvious or the voltage rises (leisure loss) Compensation function) The better the load capacity of this charger, the better the quality.
  • Power-off storage, data is guaranteed: AT34 has power-off storage function, which can store capacity and energy data when the mobile power is cut off, which is convenient for subsequent viewing and convenient for capacity energy measurement of mobile power.Note: Other USB testers that do not have a power-down storage function cannot test capacity and energy.
  • The AT34 uses a 0.96-inch IPS high-definition color LCD display to display the state of charge of the appliance, voltage, current, capacity, energy, power, equivalent impedance, temperature and other indicators at a glance. 160 degree wide viewing angle, high brightness and long working life. Fast charge recognition, widely compatible: AT34 supports QC2.0, QC3.0,for i Phone 2.4A/2.1A/1A/0.5A, for Andriod DCP, fast charge protocol identification, let you know the state of charge of the phone.
  • 4-bit accuracy for more accurate measurements; Measure the load equivalent impedance and power; Thermometer function, Celsius and Fahrenheit free switching: Using high-precision thermistor sensor; USB 3.0 interface: Compatible with USB 2.0, support high current test, support USB3.0 interface mobile hard disk and U disk test.
  • Note: The product current only flow from male connector to female connector(one-way current), the reverse is still energized but the current is shown to be 0. If you use our TC64 meter to connect phone, you must have PD charger , or have converter cable.
  • APPLICATION: Widely used in the quality inspection of type-c port 3C digital peripheral products and protect the charging equipment.-----Laptop, mobile, power bank, charger, car charger, data cable, electronic load.
  • FEATURE: Measure Load Equivalent Impedance And Power; Measure the Quality of the Charger; Human-Computer Interaction Interface---Screen off function, temperature unit switch, data group switch, data of data group clean, screen display rotation; Small Size Big Energy.
  • FEATURE: High Definition Display---0.96 inch IPS HD color LCD display with a 160-degree wide view; Quick Charge Identification---QC2.0,QC3.0,A-p-pp-l-e 2.4a/2.2a/1.1a/0.5a, Android DCP, Sann-sung quick chasrging protocols; 4 Bits Measurement Accuracy---Unique precision algorithm, higher accuracy,smaller data detection error; Power Off Storage---Data Guaranteed.
  • Application in varieties of test:PC/Laptop/Desktop Computer/Mobile Phone/Power Bank/Charger/Discharge Load/Car Charger/Cable Impedance Measurement. Can identify the quality of the charger, charging cable, charging treasure, data cable, the true and false mobile power capacity, from then bid farewell to be fooled, bid farewell to fakes!
  • Support Micro USB or Type C Connector and fast charge mode recognition,It can recognize QC 2.0/3.0,for Apple 2.4A/2.1 A/1A/0.5A,Android DCP,etc....Measure wire resistance by Differential pressure method.Gold-plated USB contacts and upgraded USB male female connector. Widened Power Cord make it own 5A high current.
  • Parameter / Useage: USB 2.0 / 1.44 Inch Full-Color LCD Display Tester, 5-digit High Precision; High Resolution; Foreground and background colors are switched alternately , with 64 options to choose; Upgrading USB A Female and Male Port--It can measure input Voltage, current, power, capacity, energy. Load access detection function, after the tester screen puts off, plug in the load and the screen will light up automatically.
  • Via Bluetooth connection, you can use mobile phone APP or PC control the USB tester. PC software support PC window (Win 7 and above) and Phone Android (Android 5.0 and above, support 14 kinds language, chinese, english and Russia .... )
  • Offline Data Storage function. One-key mode to upgrade firmware. Support mobile phone APP(Android+IOS) and PC software to connect and control, wireless connection control(Only for TC66C). Fast load recognition mode: QC2.0, QC3.0, APPLE 2.4A / 2.1A / 1A / 0.5A, Android DCP.
  • Human-Computer Interaction Interface. The voltage,current,capacity,energy, power,equivalent impedance,temperature and other indicators are clear at a glance.
  • Supports Two-way current measurement, forward current and reverse current. 6-digit measurement resolution. Independent power supply, measurement from 0V, low voltage equipment detection necessary.
  • TC66C adopts 0.96 inch LCD HD color IPS screen to display the charging status of the appliance in real time.

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4Pcs SG90 9g Micro Servos for RC Robot Helicopter Airplane Controls Car Boat

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4Pcs SG90 9g Micro Servos for RC Robot Helicopter Airplane Controls Car Boat

Current price: 10.99 USD


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  • LD25 4-bit led digital display tester have some Advantage:1.Display upgrade;2.Protection upgrade;3.Interface upgrade;4.Cooling upgrade;5.Precision multi-turn potentiometer;6. Intelligent temperature control fan.It is suitable for measuring the output current capability of the charger, using the bulk aging test of the charger factory, and measuring the quality of the Micro USB charging cable and the Type-C charging cable.
  • Note: LD25 USB Electronic Load Tester is not reverse polarity protection, the input polarity can not be reversed, otherwise the product is permanently damaged and cannot be repaired!
  • There are some incompatibility problem between some android phone and our bluetooth board, Please purchase carefully, it compatible with Samsung NOTE8 / S8. For Android and IOS APP:A:APP only support android 5.0 and above,and IOS 8 and above.B:Allow APP to do in the background, not be cleaned.C: allow APP self-starting.D:Allow APP stay after screen locked,not be cleaned.E.Type-c port is just to measure type-c cable,not support all Typ-c quick charge and PD charger;not trigger.
  • UM34C Android Phone APP Control.No need professionalwiring,simply the operation,only need to download APP.Real detect charging status of USB power supply,Voltage,Current,Capacity,Temperature and etc.other multi-function multi-data measurement display,high precision comparable professional equipment.At a gance,more convenient.
  • Measure the quality of the charger: connect the same load, compare the no-load and the load, the greater the voltage drop, the worse the charger capacity is, the worse the quality; the voltage drop is not obvious or the voltage rises (leisure loss) Compensation function) The better the load capacity of this charger, the better the quality.
  • Power-off storage, data is guaranteed: AT34 has power-off storage function, which can store capacity and energy data when the mobile power is cut off, which is convenient for subsequent viewing and convenient for capacity energy measurement of mobile power.Note: Other USB testers that do not have a power-down storage function cannot test capacity and energy.
  • The AT34 uses a 0.96-inch IPS high-definition color LCD display to display the state of charge of the appliance, voltage, current, capacity, energy, power, equivalent impedance, temperature and other indicators at a glance. 160 degree wide viewing angle, high brightness and long working life. Fast charge recognition, widely compatible: AT34 supports QC2.0, QC3.0,for i Phone 2.4A/2.1A/1A/0.5A, for Andriod DCP, fast charge protocol identification, let you know the state of charge of the phone.
  • 4-bit accuracy for more accurate measurements; Measure the load equivalent impedance and power; Thermometer function, Celsius and Fahrenheit free switching: Using high-precision thermistor sensor; USB 3.0 interface: Compatible with USB 2.0, support high current test, support USB3.0 interface mobile hard disk and U disk test.
  • Note: The product current only flow from male connector to female connector(one-way current), the reverse is still energized but the current is shown to be 0. If you use our TC64 meter to connect phone, you must have PD charger , or have converter cable.
  • APPLICATION: Widely used in the quality inspection of type-c port 3C digital peripheral products and protect the charging equipment.-----Laptop, mobile, power bank, charger, car charger, data cable, electronic load.
  • FEATURE: Measure Load Equivalent Impedance And Power; Measure the Quality of the Charger; Human-Computer Interaction Interface---Screen off function, temperature unit switch, data group switch, data of data group clean, screen display rotation; Small Size Big Energy.
  • FEATURE: High Definition Display---0.96 inch IPS HD color LCD display with a 160-degree wide view; Quick Charge Identification---QC2.0,QC3.0,A-p-pp-l-e 2.4a/2.2a/1.1a/0.5a, Android DCP, Sann-sung quick chasrging protocols; 4 Bits Measurement Accuracy---Unique precision algorithm, higher accuracy,smaller data detection error; Power Off Storage---Data Guaranteed.
  • Application in varieties of test:PC/Laptop/Desktop Computer/Mobile Phone/Power Bank/Charger/Discharge Load/Car Charger/Cable Impedance Measurement. Can identify the quality of the charger, charging cable, charging treasure, data cable, the true and false mobile power capacity, from then bid farewell to be fooled, bid farewell to fakes!
  • Support Micro USB or Type C Connector and fast charge mode recognition,It can recognize QC 2.0/3.0,for Apple 2.4A/2.1 A/1A/0.5A,Android DCP,etc....Measure wire resistance by Differential pressure method.Gold-plated USB contacts and upgraded USB male female connector. Widened Power Cord make it own 5A high current.
  • Parameter / Useage: USB 2.0 / 1.44 Inch Full-Color LCD Display Tester, 5-digit High Precision; High Resolution; Foreground and background colors are switched alternately , with 64 options to choose; Upgrading USB A Female and Male Port--It can measure input Voltage, current, power, capacity, energy. Load access detection function, after the tester screen puts off, plug in the load and the screen will light up automatically.
  • Via Bluetooth connection, you can use mobile phone APP or PC control the USB tester. PC software support PC window (Win 7 and above) and Phone Android (Android 5.0 and above, support 14 kinds language, chinese, english and Russia .... )
  • Offline Data Storage function. One-key mode to upgrade firmware. Support mobile phone APP(Android+IOS) and PC software to connect and control, wireless connection control(Only for TC66C). Fast load recognition mode: QC2.0, QC3.0, APPLE 2.4A / 2.1A / 1A / 0.5A, Android DCP.
  • Human-Computer Interaction Interface. The voltage,current,capacity,energy, power,equivalent impedance,temperature and other indicators are clear at a glance.
  • Supports Two-way current measurement, forward current and reverse current. 6-digit measurement resolution. Independent power supply, measurement from 0V, low voltage equipment detection necessary.
  • TC66C adopts 0.96 inch LCD HD color IPS screen to display the charging status of the appliance in real time.
  • Application: Used for fixed-wing, helicopter, KT, glider, small robot, robotic arm and other models.
  • Small size and light weight.
  • Operating voltage: 4.8-6V
  • Operating speed: 0.1second/ 60degree ( 4.8V no load)
  • High quality and high cost performance.

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10pcs TP4056 Charging Module with Battery Protection 18650 BMS 5V Micro USB 1A 186 50 Lithium Battery Charging Board

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10pcs TP4056 Charging Module with Battery Protection 18650 BMS 5V Micro USB 1A 186 50 Lithium Battery Charging Board

Current price: 9.99 USD


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  • LD25 4-bit led digital display tester have some Advantage:1.Display upgrade;2.Protection upgrade;3.Interface upgrade;4.Cooling upgrade;5.Precision multi-turn potentiometer;6. Intelligent temperature control fan.It is suitable for measuring the output current capability of the charger, using the bulk aging test of the charger factory, and measuring the quality of the Micro USB charging cable and the Type-C charging cable.
  • Note: LD25 USB Electronic Load Tester is not reverse polarity protection, the input polarity can not be reversed, otherwise the product is permanently damaged and cannot be repaired!
  • There are some incompatibility problem between some android phone and our bluetooth board, Please purchase carefully, it compatible with Samsung NOTE8 / S8. For Android and IOS APP:A:APP only support android 5.0 and above,and IOS 8 and above.B:Allow APP to do in the background, not be cleaned.C: allow APP self-starting.D:Allow APP stay after screen locked,not be cleaned.E.Type-c port is just to measure type-c cable,not support all Typ-c quick charge and PD charger;not trigger.
  • UM34C Android Phone APP Control.No need professionalwiring,simply the operation,only need to download APP.Real detect charging status of USB power supply,Voltage,Current,Capacity,Temperature and etc.other multi-function multi-data measurement display,high precision comparable professional equipment.At a gance,more convenient.
  • Measure the quality of the charger: connect the same load, compare the no-load and the load, the greater the voltage drop, the worse the charger capacity is, the worse the quality; the voltage drop is not obvious or the voltage rises (leisure loss) Compensation function) The better the load capacity of this charger, the better the quality.
  • Power-off storage, data is guaranteed: AT34 has power-off storage function, which can store capacity and energy data when the mobile power is cut off, which is convenient for subsequent viewing and convenient for capacity energy measurement of mobile power.Note: Other USB testers that do not have a power-down storage function cannot test capacity and energy.
  • The AT34 uses a 0.96-inch IPS high-definition color LCD display to display the state of charge of the appliance, voltage, current, capacity, energy, power, equivalent impedance, temperature and other indicators at a glance. 160 degree wide viewing angle, high brightness and long working life. Fast charge recognition, widely compatible: AT34 supports QC2.0, QC3.0,for i Phone 2.4A/2.1A/1A/0.5A, for Andriod DCP, fast charge protocol identification, let you know the state of charge of the phone.
  • 4-bit accuracy for more accurate measurements; Measure the load equivalent impedance and power; Thermometer function, Celsius and Fahrenheit free switching: Using high-precision thermistor sensor; USB 3.0 interface: Compatible with USB 2.0, support high current test, support USB3.0 interface mobile hard disk and U disk test.
  • Note: The product current only flow from male connector to female connector(one-way current), the reverse is still energized but the current is shown to be 0. If you use our TC64 meter to connect phone, you must have PD charger , or have converter cable.
  • APPLICATION: Widely used in the quality inspection of type-c port 3C digital peripheral products and protect the charging equipment.-----Laptop, mobile, power bank, charger, car charger, data cable, electronic load.
  • FEATURE: Measure Load Equivalent Impedance And Power; Measure the Quality of the Charger; Human-Computer Interaction Interface---Screen off function, temperature unit switch, data group switch, data of data group clean, screen display rotation; Small Size Big Energy.
  • FEATURE: High Definition Display---0.96 inch IPS HD color LCD display with a 160-degree wide view; Quick Charge Identification---QC2.0,QC3.0,A-p-pp-l-e 2.4a/2.2a/1.1a/0.5a, Android DCP, Sann-sung quick chasrging protocols; 4 Bits Measurement Accuracy---Unique precision algorithm, higher accuracy,smaller data detection error; Power Off Storage---Data Guaranteed.
  • Application in varieties of test:PC/Laptop/Desktop Computer/Mobile Phone/Power Bank/Charger/Discharge Load/Car Charger/Cable Impedance Measurement. Can identify the quality of the charger, charging cable, charging treasure, data cable, the true and false mobile power capacity, from then bid farewell to be fooled, bid farewell to fakes!
  • Support Micro USB or Type C Connector and fast charge mode recognition,It can recognize QC 2.0/3.0,for Apple 2.4A/2.1 A/1A/0.5A,Android DCP,etc....Measure wire resistance by Differential pressure method.Gold-plated USB contacts and upgraded USB male female connector. Widened Power Cord make it own 5A high current.
  • Parameter / Useage: USB 2.0 / 1.44 Inch Full-Color LCD Display Tester, 5-digit High Precision; High Resolution; Foreground and background colors are switched alternately , with 64 options to choose; Upgrading USB A Female and Male Port--It can measure input Voltage, current, power, capacity, energy. Load access detection function, after the tester screen puts off, plug in the load and the screen will light up automatically.
  • Via Bluetooth connection, you can use mobile phone APP or PC control the USB tester. PC software support PC window (Win 7 and above) and Phone Android (Android 5.0 and above, support 14 kinds language, chinese, english and Russia .... )
  • Offline Data Storage function. One-key mode to upgrade firmware. Support mobile phone APP(Android+IOS) and PC software to connect and control, wireless connection control(Only for TC66C). Fast load recognition mode: QC2.0, QC3.0, APPLE 2.4A / 2.1A / 1A / 0.5A, Android DCP.
  • Human-Computer Interaction Interface. The voltage,current,capacity,energy, power,equivalent impedance,temperature and other indicators are clear at a glance.
  • Supports Two-way current measurement, forward current and reverse current. 6-digit measurement resolution. Independent power supply, measurement from 0V, low voltage equipment detection necessary.
  • TC66C adopts 0.96 inch LCD HD color IPS screen to display the charging status of the appliance in real time.
  • Application: Used for fixed-wing, helicopter, KT, glider, small robot, robotic arm and other models.
  • Small size and light weight.
  • Operating voltage: 4.8-6V
  • Operating speed: 0.1second/ 60degree ( 4.8V no load)
  • High quality and high cost performance.
  • In discharge mode (The charging mode KEY function is invalid), trigger the KEY port once to open the output; continuously trigger the KEY port twice to close the output. The first time the load is connected, the output is automatically turned on.If the load is less than 50MA, the output will be automatically turned off after 30 seconds; if the load is greater than 50MA, the output will be automatically turned on. Allow discharge while charging. (Note: At this time output voltage 4.7 / 5V).
  • MCU users, if you accept a small load KEY can be connected to the microcontroller about 20s to provide a low level allows the module to continue working. Trigger mode: low level trigger (ground) . 4 in 1 Charging / Discharging / Lithium Battery Protection / Battery Level Indicator Module. Lithium battery protection function: over-current, overvoltage, over-temperature, short circuit protection.
  • Instructions: The first time you access the battery, it may no voltage between the output OUT + and OUT -, then access 5V voltage charge your energy can activate the protection circuit, and the battery from the B+ B-, then draw a line on the short open also need recharged to activate the protection circuit. Note that the charger must be able to output 1A or more to do when using a mobile phone charger input, or may not charge.
  • Features and Parameters:This TP4056 Charging Module inputs with MICRO USB female, can be directly input to do with the phone charger rechargeable lithium battery, And still retains the input voltage wiring pads, can be very convenient DIY. Charging cut-off voltage: 4.2V ± 1%; Maximum charge current: 1000mA. Input voltage: 5V; Battery over-discharge protection voltage: 2.5V; Batteryovercurrent protection current: 3A;

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