18650/21700 Battery Capacity Tester LCD Display MAh Lithium Digital Battery Detection Module For Battery Test Charge-Discharge

Features:

1. Supports reverse polarity protection to effectively prevent device damage caused by incorrectly installed batteries, ensuring safer and more reliable operation.

2. Features four independent channels that operate without interference, enabling simultaneous charging, discharging, capacity sorting, or aging tests for four 21700 batteries.

3. Features an ABS air-guiding base paired with a large 40x40mm fan for active, efficient cooling, ensuring stable long-term operation.

4. Delivers precise capacity measurement with reliable data, meeting high-precision battery performance evaluation requirements.

5. Supports Chinese/English interface switching with real-time display of test parameters for intuitive, convenient operation.

21700:

Power Supply (Self-Supplied): Use two DC 5V 3A or higher adapters via Type-C port

Test Subject: Ternary Lithium Iron Phosphate 21700 battery; cannot charge Lithium Iron Phosphate batteries

Charging Voltage: 4.2V fixed, non-adjustable; charges via onboard 4506 charging chip

Charging Current: Maximum 1A non-constant current, non-adjustable, controlled by 4056 chip

Stop (Discharge) Voltage: 2.5-3.5V, 11-step adjustable

Discharge Current: Maximum 1A non-constant current discharge, non-adjustable

Discharge Resistor: 6W 3Ω 9J wirewound resistor, modification not supported

Internal Resistance Measurement Method: DC two-wire method principle test, results for reference only

21700 Battery Testing: Directly tests 21700 batteries without adapters

Cooling Method: Active cooling via 40*40mm fan

Reverse Polarity Protection: Supported

Main Unit Dimensions: 147*102*33mm

21700+18650:

Power Supply (Self-Supplied): Use two DC 5V 3A or higher adapters via Type-C port

Test Subjects: Ternary LiFePO₄ 21700 batteries + 18650 Li-ion batteries. Do not charge LiFePO₄ batteries

Charging Voltage: 4.2V fixed, non-adjustable. Charges via onboard 4506 charging chip

Charging Current: Maximum 1A non-constant current, non-adjustable, controlled by 4056 chip

Stop (Discharge) Voltage: 2.5-3.5V, 11-step adjustable

Discharge Current: Maximum 1A non-constant current discharge, non-adjustable

Discharge Resistor: 6W 3Ω 9J wire-wound resistor, modification not supported

Internal Resistance Measurement Method: DC two-wire method principle test, results for reference only

Cooling Method: 40*40mm fan active cooling

Reverse Polarity Protection: Supported

Main Unit Dimensions: 147*102*33mm

18650:

Working voltage: DC5V

Applicable battery: suitable for all batteries that meet the requirements of stopping discharge voltage of 2.5~3.5V and starting from 2.8V to 4.2V

Power supply interface: Dual Type-C power supply interface (power supply and power cord are not included)

System language: English/Chinese can be switched

Test quantity: 4-way charging and discharging measurement

Internal resistance measurement: support, use DC two-wire method to test internal resistance

Charging function: support, automatic cut-off charging when fully charged (lithium iron phosphate battery charging is not supported)

Discharge function: support, automatically stop when conditions are met, and the discharge current is not adjustable

Automatic charging and discharging: supported. The battery is fully charged at the end of automatic mode

Cyclic charging and discharging: supported, 1~9 cycles adjustable (only supported in automatic mode)

Status prompt: Supported

Cooling mode: fan active cooling

Overheat protection: support

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, 11 adjustable gears

Discharge current: the maximum current is about 1A, which is not adjustable, and does not support independent transformation

Charging voltage: controlled by a special battery charging chip, with a maximum charge of about 1A and a full charge voltage of 4.2V

Power-off saving: only save the set parameters, not the measurement data

Product size: 150 × one hundred and three × 36mm

Package size: 182 × one hundred and twelve × 50mm

Package include:

18650 battery capacity internal resistance tester X1