Tester 18650 Capacities of 2025
Best Choice1
KOOBOOKKOOBOOK 1Pcs Type-C 18650 Lithium Battery Capacity Tester 8 Channel MAh MWh Digital Battery Power Detector Module 18650 Battery Internal Resistance Tester Support Automatic Charge Discharge
Main highlights- Working voltage: DC5V 10A (standard bare metal, without power supply), overpressure must burn machine.Power supply reverse protection,prohibit reverse power supply
- The blue segment at the upper end is the external discharge terminal, and the lower end has the working indicator of the corresponding channel.U-shaped groove at the back is combined with PCB board, and the fan actively dissipates heat to form a heat dissipation channel
- Only support charging-discharging-charging 1 cycle in automatic mode, do not support multiple cycles. support external test,can be discharged through the 2P terminal external, a single channel single time only and can only support the battery holder or external test in one, can not be used at the same time the battery holder and external battery test
- 8 independent channels, each unrelated, independent operation, without mutual influence.support 8 channels to set up synchronisation, also can set up each channel parameter individually
- 18650 battery holder using compact battery holder, suitable for flat battery measurement.Voltage and current curve display, real-time voltage and current, DC two-wire method to measure internal resistance, only for the same batch sorting analogy
9.9Exceptional
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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
9.6Exceptional
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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
9.5Excellent
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4
EBLEBL 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.
9.3Excellent
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5
ZORZA12% OffZORZA 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.
9.2Excellent
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6
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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7
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）
9.0Excellent
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8
RQG18650 Battery Capacity Tester, Lithium Battery Internal Resistance Tester, 4 Channel Automatic Charge Discharge Module Lithium Battery Power Meter with Dual Type-C Interface, Color Digital Display
Main highlights- NOTE: Capacity is measured only after the discharging is finished
- High-Accuracy Internal Resistance Measurement: Lithium battery tester internal resistance tester uses DC two-wire method for accurate resistance values, especially when batteries are fully charged
- Flexible Charging & Discharging Modes: 18650 battery capacity tester allows separate charging and discharging, with automatic mode supporting up to 9 cycles for thorough battery analysis
- Automatic Cut-Off Function: Battery tester for capacity power internal resistance stops fully automatic charging and discharging when conditions are met, with 1 to 9 adjustable cycles for tailored testing
- Applicability: Battery capacity tester designed for testing 18650 lithium batteries, NOT working with LiFePO4 battery for charging
- 4 Channel Independent Testing: 18650 battery capacity tester supports separate capacity & internal resistance measurement for each channel, ensuring precise testing without interference, with a color display of real-time results in mAh/mWh for easy monitoring battery performance
- 11 Adjustable Discharge Voltages: 18650 battery capacity tester provides 11 levels (2.5V to 3.5V) for precise control of discharge termination voltage to suit various battery types
8.8Very Good
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9
HOBBYFLY4-Wire Battery Resistance Capacity Tester for Coil Cell 18650 26650 21700 Bench Battery Holder - A+/A- ;V+/V- Interfaces
Main highlights- The battery tester clamp is 4 wires tester jig. It can make your test and measurement more precise.
- Nominal current 5A,Maximum current: 10A
- It can be used much easily that you only loose the screw and tight it by hand.And the positive and negative role can be shorted to calibrate your device to zero.
- Application: coil cell battery,18650,26650, AA, AAA etc. Gap: 0 to 2.56 inch
8.7Very Good
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10
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.
8.6Very Good
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