11 Ago 18650/21700 Battery Capacity Internal Resistance Tester Auto Charging Discharge
18650 Battery Tester can be used with 21700 battery holders. Cycle charging and discharging: only support charging-discharging-charging 1 cycle in automatic mode, do not support multiple cycles. U-shaped groove at the back is combined with PCB board, and the fan actively dissipates heat to form...