18650 Battey Testers 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
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.
9.3Excellent
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5
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.
9.1Excellent
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6
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.
8.9Very Good
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7
X-cosrackUniversal Battery Checker Tester with Leads LCD Display, Battery Capacity Voltage Resistance Tester for AAA AA C D 9V Digital 12V 3.7V Li-ion 18650 CR123A CR2032 Button Cell Batteries More
Main highlights- TIPS: What you get is a universal battery checker tester (2 AAA batteries not included). If you have any questions, don't hesitate to contact us.
- MULTI-FUNCTIONAL TESTER: This battery checker tester can not only detect battery capacity percentage level precisely, but measure the voltage and internal resistance of household battery, equal to simple multimeter. Capacity percentage indicates battery power is high or low, and resistance reflects whether battery quality is good or not, smaller resistance, better battery.
- HIGH COMPATIBILITY: This digital battery tester fit for all common batteries from small to large- 1.2V 1.5V NIMH Alkalilne AAAA, AAA, AA, A, C, SC, D battery 9V (6LR61/LR61) battery, 3.7V 3.2V 3.0V Li-ion LiFePO4 Lithium 10440, 16340(123A), CR2, 18650, 26650, 32650 etc, CRV3, 2CR5, 1.5V 3.0V Lithium alkaline button cell, 1.5V hearing aid batteries A13 A10, A675, A312, 3.0V various Lithium button cell (CR2032 CR2025 CR2016 CR1025 etc); 1.5V various alkaline primary button cell (AG1 AG10 AG13 AG11 etc), perfect household battery tester for all kinds of primary batteries and rechargeable batteries.
- EASY TO USE: Just switch corresponding voltage and use leads to test, no need to insert battery into slot; the digital tester will quickly show the status of your batteries’ health, helps to avoid battery damage from overcharging. POWERED by 2 NON-RECHARGEABLE AAA ALKALINE BATTERIES.
- CLEAR LCD SCREEN: Easy to read the state of your battery, it will analyze whether your battery is good or not or whether they need to be charged; compact and lightweight tool, portable handheld tester.
8.8Very Good
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8
DWEII2PACK 18650 Lithium Battery Capacity Tester Module MAh MWh Digital Battery Power Detector Module 18650 Battery Tester Type-C
Main highlights- ❃❃This battery capacity tester is mainly used for test the capacity of 18650 battery
- ❃❃Supply Voltage: DC5-12V lithium battery (not include)；Measurement Accuracy: 1mAH；Standby Current: 5mA；Discharge Current: About 500mA；Load Power: 10W 8Ω
- ❃❃LCD Display: The 1.77in screen displays internal resistance, capacity, voltage, current, power and other information at the same time.
- ❃❃(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）
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
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.
8.5Good
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