BT4-21700 18650+21700 4 Channel Display Battery Capacity Tester Battery Internal Resistance Tester Lithium Batteries Detection

Semi-finishedproduct : No PCB included : No Battery Included : no High-concerned chemical : none Power Source : None DIY Supplies : Electrical Brand Name : Aideepen Origin : Mainland China Certification : CE

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 across all four channels. 3. Features an ABS air-guiding base paired with a large 40×40mm 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.

Parameter: 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 Package include: Tester*1 (Shipped without batteries)

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Battery capacity: 43200 Charge indicator: No Number of ports: 1 port Quick charge: No Voltage: 1.5