Capacity Tester Batteries of 2025
Best Choice1
TOPDON18% OffCar Battery Tester 24V 12V Load Tester, TOPDON BT200 100-2000CCA Automotive Alternator Tester Digital Auto Battery Analyzer Charging Cranking System Tester for Car Truck Motorcycle ATV SUV Boat Yacht
9.7 Simple to use9.7 clearly written9.5 PrecisionWhy we love it
Accurate battery health assessment.
Works with multiple vehicle types.
Easy-to-read color display.
9.8Exceptional
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Value for Money2
Eyes.sysEyes.sys Electronic Load Tester, USB Load Tester, 180W 200V 20A Battery Capacity Tester Constant Current & Constant Voltage, 4 Modes, Intelligent Discharge Resistance Power Tester
Main highlights- Flexible input wiring interface design to support more DIY connections and extend the functions
- External wired NTC thermometer to realize dual temperature measurement inside and outside
- Can test the charging speed and quality of a variety of charging cable and data cables
- 4 operating modes - constant current / constant voltage / constant power / constant resistance, plus auto generation of data report & 2.4” HD color large screen
- 3 intelligent safety protections to monitor the discharge status in real time
9.6Exceptional
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3
ANCEL30% OffANCEL BA101 Car Battery Tester, 12V Digital Automotive Alternator Meter Diagnostic Tool,100-2000 CCA Load Capacity, Charging & Cranking Analyzer for Truck, Boat, RV, Marine Vehicle, and More
9.3 Simple to use9.3 clearly written8.9 PrecisionWhy we love it
Accurate and reliable readings.
Compatible with multiple battery types.
Easy to use with a clear display.
9.5Excellent
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4
MakerHawkMakerHawk Electronic Load Tester - USB Load Tester 150W 200V 20A Resistor Adjustable Constant Current Battery Capacity Tester Module Intelligent Dischar
Main highlights- Voltage measurement range: 0.00V ~ 200V, Current measurement range: 0.00A ~ 20A.
- Two power supply methods: 1. DC6-12V DC5.0 power supply; 2. DC6-12V Micro USB power supply.The body discharge power cannot exceed 150W, otherwise there is a risk of burnout.
- Prevent burning warning: when the input voltage battery and large power test, access must be beforeusing two current adjustment knob counterclockwise to the minimum to zero, then the access, accordingto the priority according to current power to slowly adjust current knob, must not instantly transferred infull, so there are excessive instantaneous power load discharge tube burnt huge risk! Please use thespecial attention to this point, thank you!
- How to operate: Set the capacity, power, time using the Keystrokes method Reset:1. Reset button Long all data (mAh, Klitschko, 00: 00: 00); 2. Fast button twice capacity reset (mAh); 3. Fast button three power reset (ㅁ);4. Fast button Four time reset (00:00:00); 5. Fast button five settings auto standby, Discharge count down regularly; 6. No load output No load, fast seven key, And current zero zero current, Environmental temperature Accurate calibration.
- 150W power refers to: In accordance with the power calculation formula P = UI (power = voltage x current); 10V input Approximately 18A discharge current 20V input Approximately 9A discharge current 30V input Approximately 6A discharge current.
9.2Excellent
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5
DWEIIDWEII 1pcs 18650 Lithium Battery Capacity Tester Module MAh MWh Digital Battery Power Detector Module 18650 Tester Type-C (4 Channel)
Main highlights- The 1.77 inch screen simultaneously displays information such as internal resistance, capacity, voltage, current, and battery level, providing comprehensive data for analysis
- Supports four-channel capacity and internal resistance measurement.（(User manual available if do as follow: click "DWEII"(you can find "Sold by DWEII" under Buy Now button), in the new page, click "Ask a question".)we will send you the manual asap）
- Measurement parameters: Working voltage: DC5V;Detection voltage: less than or equal to DC5V;Capacity measurement range: 0~99999mAh;Battery internal resistance measurement: support;Measurement error is about 10%;Display real-time voltage/power/current: support;Discharge load: 10W.
- Applications：The 18650 battery capacity tester is specially used to check the capacity, internal resistance, voltage, current, power and other information of the 18650 battery.The integration of charge and discharge saves the tedious operation of disassembling and assembling the battery when replacing the equipment。
- 1pcs 18650 Battery Capacity Tester LCD Display Digital Automatic Charge and Discharge Internal Resistance Tester MAh MWh Lithium Battery Type-C Port Tester with Type-c to USB Cable
9.1Excellent
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6
MakerHawk14% OffMakerHawk Battery Load Tester - 180W 200V 20A USB Load Tester 4-Wire System Adjustable Constant Current Voltage Discharge Lithium Battery Capacity Tester Electronic Load Tester
Main highlights- Powerful Performance & Intelligent Cooling: This lithium battery tester has a high voltage of 200V, a high current of 20A, and a high power of 180W. Equipped with an intelligent temperature-controlled colored light fan, strong airflow and low noise, it can extend the service life and support continuous operation of long-term discharge or aging tests.
- Multi-Device Compatibility & Safety Features: This battery capacity tester supports discharge aging tests for a wide range of devices, including chargers, cables, power banks, batteries, and power adapters. It has intelligent safety protection such as overload, overcurrent and high temperature protection, real-time monitoring of status makes it safe and reliable.
- High Precision & Upgraded Four-Wire System: Utilizing a four-wire connection, this voltage tester ensures accurate voltage measurements unaffected by wire resistance and its measurement accuracy is comparable to that of large professional instruments. It is also compatible with two-wire connection.
- Four Discharge Modes & App Compatibility: The USB load tester supports constant current, constant power, constant resistance, and constant voltage modes. It is compatible with Android and iOS apps, as well as PC BT and wired connections, providing versatile testing options.
- 2.4" Large Screen Battery Load Tester: Featuring a high-definition color screen, this electronic load tester provides clear and precise readings. It offers comprehensive parameter, settings and operations, including voltage, current, power, capacity, electricity, temperature, discharge resistance, time-limited discharge and stop voltage, etc., to ensure accurate and reliable results.
8.8Very Good
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7
KKnoon15% OffKKnoon 150W 20A Adjustable Constant Current Electronic Load 2.4inch TFT Color Display 4 Working Modes USB Lithium Battery Capacity Monitor Tester Discharge Meter
Main highlights- ️Voltage, current and power overrun protections can be set; stop discharge voltage and discharge time can be set.
- ️This product is a direct current CNC electronic load, with a maximum power of 150W and a maximum load current of 20A. Support test the capacity of power battery.
- ️Power supplying temperature can be monitored by an external NTC sensor.
- ️It has four working modes design, constant current mode, constant voltage mode, constant power mode and constant resistance mode.
- ️2.4inch TFT color screen, with voltage, current, power, electricity, capacity, internal resistance, load, operating mode, OVP, OCP, OPP, stop voltage, time limit discharge display function.
8.6Very Good
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8
Generic150W 20A Constant Current Electronic Load, USB Battery Load Tester, Lithium Battery Capacity Electricity Monitor, Current Tester, Color Display
Main highlights- This direct current CNC electronic load is capable of handling a maximum power of 150W and a maximum load current of 20A
- The monitor is suitable for testing the capacity of power batteries and monitoring the temperature of the power supply using an external NTC sensor
- The load tester features a 2.4 in display screen that shows voltage, current, power, energy, capacity, internal resistance, load, operating mode, stop voltage, and discharge time
- The electronic load offers overvoltage protection (OVP), overcurrent protection (OCP), over power protection (OPP)
- The device offers four operating modes: constant current, constant voltage, constant power, and constant resistance
8.4Good
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9
TOPDON11% OffTOPDON BT100 Car Battery Tester 12V Load Tester, 100-2000 CCA Automotive Alternator Tester Digital Auto Battery Analyzer Charging Cranking System Tester for Car Truck Motorcycle ATV SUV Boat Yacht
9.9 clearly written9.7 Simple to use9.5 PrecisionWhy we love it
Easy to use with clear LED indicators.
Compatible with various vehicle types.
Provides accurate and reliable results.
8.2Good
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10
Schumacher Electric17% OffSchumacher Electric Battery Load Tester and Voltmeter, BT-100, 100 Amps, 6 Volt, 12 Volt, for Testing Batteries Up to 1000 Cranking Amps
9.7 clearly written9.5 Simple to use9.3 PrecisionWhy we love it
Easy operation with visible meter readings.
Comprehensive battery health diagnostics.
Durable with heavy-duty clamps.
8.0Good
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