18650 Battery Tester Capacities of 2025
Best Choice1
Clicked 12 times in the last monthNuhikapNuhikap 8-Channel 18650 Lithium Battery Capacity Tester Module MAh MWh Digital Battery Power Detector Module Type-C
Main highlights- 5. Channel synchronisation: support 8 channels to set up synchronisation, also can set up each channel parameter individually. Cycle charging and discharging: only support charging-discharging-charging 1 cycle in automatic mode, do not support multiple cycles.
- 4. 18650 battery holder using compact battery holder, suitable for flat battery measurement. Channel type: 8 channels, each unrelated, operation, without mutual influence.
- 3. U-shaped groove at the back is combined with PCB board, and the fan actively dissipates heat to form a heat dissipation channel.
- 2. Voltage and current curve display, real-time voltage and current, DC two-wire to measure internal resistance.
- 1. The blue segment at the upper end is the external discharge terminal, and the lower end has the working indicator of the corresponding channel.
9.8Exceptional
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Value for Money2
DWEIIDWEII 2PACK 18650 Lithium Battery Capacity Tester Module MAh MWh Digital Battery Power Detector Module 18650 Battery 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.
- 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。
- 2PACK18650 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
9.5Excellent
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3
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
9.4Excellent
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4
EBL15% OffEBL 18650 Battery Charger with Discharge & Testing Functions, Lithium Battery Charger for 3.6V/3.7V/3.85V Li-ion/IMR/INR/ICR/3.2VLiFePO4, 1.2V Ni-MH/Ni-CD Rechargeable Batteries
8.7 worth the money8.4 Simple to use8.4 Charging powerWhy we love it
Supports multiple battery types.
Fast charging with four slots.
Real-time LCD charge information.
9.2Excellent
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5
ImrenIMREN 18650 Capacity Tester,18650 Battery Charger with Discharge & Testing Function, 21700 Battery Charger with LCD Screen Display Capacity Suit for 18650 21700 20700 1.2V Ni-MH/Ni-CD LiFePO4 Battery
Main highlights- 【What You'll Get:】 - 1 IMREN 4 bay 3.7V/1.2V battery charger, 1 AC cable,1 Car Charger, user manual, (Do not charge non-rechargeable batteries.)
- 【Practical slot and smart LED】- Short press "SLOT" to view C1, C2, C3, C4, the information displayed on the current screen is the charging status information for each channel. This 21700 battery charger with large screen can show charging capacity, battery voltage, percentage, charging time, easily to understand the charging datum. The 18650 battery charger LCD back-light will become dark after 30 sec. without any operation
- 【C4 Channel 18650 Battery Tester】-Put the 18650 battery into the charger's C4 channel,then Press SLOT and MODE both keys for 2 seconds till flashes.After 5 seconds,it will automatically enter Battery Capacity Analysis Mode.In this mode,the battery is first fully charged,and then discharged at a constant current of 500mAh.After a cycle process of charging and discharging, the capacity of the corresponding battery is displayed on the screen. (only for the C4 channel 18650 battery tester)
- 【Automatic LCD Display】- This is a smart 18650 battery charger with LCD Display, Automatically adjust and choose the best charging current for different batteries to maximize battery life, also could automatically detect Li-ion and Ni-MH batteries at same time or separately. Comes with a car adapter, easily charge your 18650 batteries in your big truck
- 【18650 Battery Charger】- the Battery Charger suit for IMR / Li-ion(4.2V / 4.35V) / LiFePO4(3.6V) 10340 / 10350 / 10440 / 10500 / 12340 / 12500 / 12650 / 13450 / 13500 / 13650 / 14350 / 14430 / 14500 / 14650 / 16500 / 16340(RCR123) / 16650 / 17350 / 17500 / 17650 / 17670 / 18350 / 18490 / 18500 / 18650 / 18700 / 20700 / 21700 / 22500 / 22650 / 25500 / 26500 / 26650 Ni-MH / Cd(1.48V) A AA AAA AAAA C SC.(Support car charge, Includes Car Adapter)
- 【1000mA*4pcs 18650 Battery Charger】- The battery charger with 4 individual speedy charge slots, and the charge current 1000mA*4pcs 18650 Battery. The Charger can Charge 4PCS 3000mAH 18650 batteries at the same time in just 3 hours;The 18650 charger Input：AC 110-240V 50/60Hz, DC 12V
9.1Excellent
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6
ZORZAZORZA 1Pcs Type-C 18650 Battery Capacity Tester Lithium Battery Internal Resistance Tester 4-Channel Automatic Charge Discharge Module for Flat Ends 18650 Batteries
Main highlights- This battery tester operates on a DC5V power supply and is equipped with dual Type-C ports (power cord not included, compatible with C-type phone cables). It utilizes a direct current two-wire method for internal resistance measurement and provides status indicators. It also offers high-temperature protection and active heat dissipation.
- The compact design of the 18650 battery holder supports flat top batteries and allows for easy measurement (compatible with batteries with discharge voltage between 2.5V and 3.5V, and charging voltage at 4.2V).Please note automatic charging and discharging function is not suitable for lithium iron phosphate batteries.
- Switching between Chinese and English interface: Press and hold the "Menu/M" button while powering on. Release the button when the screen lights up. After turning on, wait for 10 seconds before disconnecting the power. When powered on again, the language switch will be completed.
- Our battery tester supports independent 4-channel internal resistance and capacity measurements, allowing you to accurately assess your batteries.
- It features a charging function with automatic cutoff when the batteries are fully charged, ensuring their safety and longevity.The discharge function automatically stops when predetermined conditions are met, preventing over-discharging.In automatic charging mode, it supports up to 9 cycles of charging and discharging, optimizing battery performance.
9.0Excellent
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7
VISLONE13% OffVISLONE Digital Display Battery Capacity Internal Resistance Tester Digital Lithium Battery Power Detector Module 18650 Battery Test Meter Dual Type-C Interface
Main highlights- The product supports four-channel capacity and internal resistance measurement, each channel is independent of each other, set up separately and run independently without interfering with each other.
- Support separate charging, separate discharging, automatic mode supports up to 9 charging and discharging cycles.
- Stop discharge voltage: 2.5V, 2.6V, 2.7V, 2.8V, 2.9V, 3.0V, 3.1V, 3.2V, 3.3V, 3.4V, 3.5V, a total of 11 adjustable gear.
- Full automatic cut off charging, discharge to reach the conditions automatically stop, automatic mode 1 ~ 9 times adjustable cycle.
- Adopts direct current two-wire method to test internal resistance, with high accuracy of value when the battery is fully charged.
8.8Very Good
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8
LiitoKalaLiitoKala Lii-M4S 18650 Battery Charger Smart Universal Charger LCD Display for 26700 18650 26650 21700 AA Touch Button LCD Display Test The Battery Capacity
Main highlights- 【Universal Battery Charger】4 bay battery charger is fully compatible with 3.7V Rechargeable Batteries：18650,26650,22650,20700,18350,18490,18500,18700,17335,17670,17500,16340 ,14500, 10440 , 14650, 25500,32650, 1.2V NiMH/Cd: AA, AAA，SC, C Size.(It cannot charge all 1.5V batteries, including AA AAA batteries)
- 【Touch Button 4-Bay 18650 Battery Charger】Long press the MODE touch point to switch between these four modes: first tap the 1-2 or 3-4 touch point to select the channel, then long press MODE to change the original mode, tap MODE to select the desired mode, press CURRENT The touch point changes the current size, and it enters the working state without any action for 8 seconds after selection, which is easy to use. reference values.
- 【LCD DISPLAY】: LCD display to monitor the four slots information. The charger can change independent charging or different current selection according to the corresponding touch point function, as well as mixed charging of different batteries, which is easy to operate; in the working state, you can tap (1-2, 3-4) touch points to view the corresponding channel current (mA) /Capacity(mAh)/Voltage(V)/Time(h) and other data reference values.Each battery parameter such as voltage (V), current (mA), time (h) can be showed independently by pressing the 1-2/3-4button.
- With CHARGE, DISCHARGE, TEST and STORAGE four working modes, can work in separate channels at the same time, independently set charging/DISCHARGE capacity detection, normal capacity detection function;In test mode, the normal battery capacity test process consists of three steps (1. Fully charged, 2. Then discharged fully, 3. Fully charged);Charge mode and test mode can work at the same time; charging capacity test / normal capacity test function can be set independently
- Quality assurance:We offer 12 months.Please contact me if you have any questions during use.
8.7Very Good
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9
Gleedideneny4-Bay 18650 Battery Charger, Test Battery Capacity, LCD Display, Fast Charging, Universal Battery Charger for 3.7V 26650 18650 18350 20650 14500 18500 1.2V AA AAA C SC Size Batteries
Main highlights- This is a high-end intelligent fast charger, which has the functions of key control / 4-channel independent charging / battery capacity detection / anti reverse connection / short-circuit protection / overcharge protection / USB 5v1A output(power bank) and battery zero voltage activation function, also it can automatically and timely monitor battery charging and discharging and detection process.
- This Fast Universal Battery Charger adopts one screen independent LCD display, and the operating mode (charge and test), battery voltage (V), working current (MA), charging time (H), battery capacity (MAH) and power percentage (%) are clear at a glance.
- Note:The charger can only charge cylindrical Li-ion battery and Ni-Mh battery, but not LiFePO4 battery;Before use, please refer to the manual carefully and pay attention to the recommended charging current of the charging battery, and do not exceed the recommended charging current
- In test mode, the normal battery capacity test process consists of three steps (1. Fully charged, 2. Then discharged fully, 3. Fully charged);Charge mode and test mode can work at the same time; charging capacity test / normal capacity test function can be set independently, without separate discharge test function.
- 18650 charger For Different Types Of Batteries： 3.7V:18650,26650,22650,20700,18490,18500,18700,17335,17670,17500,16340 ,14500, 10440 , 14650, 25500,32650,1.2V NiMH/Cd: AA, AAA，SC, C Size.(It cannot charge 1.5V AA AAA batteries)
8.6Very Good
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10
Gleedideneny4-Bay 18650 Battery Charger，Test Battery Capacity，Touch Button,Universal Battery Charger for: 3.7V 26650 20700 18650 18350 1.2V NiMH/Cd AA AAA Size Batteries
Main highlights- ☆【Universal Battery Charger】4 bay battery charger is fully compatible with 3.7V Rechargeable Batteries：18650,26650,22650,20700,18350,18490,18500,18700,17335,17670,17500,16340 ,14500, 10440 , 14650, 25500,32650, 1.2V NiMH/Cd: AA, AAA，SC, C Size.(It cannot charge all 1.5V batteries, including AA AAA batteries)
- ☆【Touch Button 4-Bay Battery Charger】Long press the MODE touch point to switch between these four modes: first tap the 1-2 or 3-4 touch point to select the channel, then long press MODE to change the original mode, tap MODE to select the desired mode, press CURRENT The touch point changes the current size, and it enters the working state without any action for 8 seconds after selection, which is easy to use.
- ☆【Fast Charge, Easy to Use】The charger can change independent charging or different current selection according to the corresponding touch point function, as well as mixed charging of different batteries, which is easy to operate; in the working state, you can tap (1-2, 3-4) touch points to view the corresponding channel current (mA) /Capacity(mAh)/Voltage(V)/Time(h) and other data reference values.
- ☆With CHARGE, DISCHARGE, TEST and STORAGE four working modes, can work in separate channels at the same time, independently set charging/DISCHARGE capacity detection, normal capacity detection function;In test mode, the normal battery capacity test process consists of three steps (1. Fully charged, 2. Then discharged fully, 3. Fully charged);Charge mode and test mode can work at the same time; charging capacity test / normal capacity test function can be set independently.
- ☆Touch button adopts the design of touch buttons, and it will send out a "beep" sound feedback when touched. Responsive and easy to operate.
8.5Good
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