Atoplee 10pcs TP4056 1A Charging Module for Rechargeable Lithium Battery The value of the charging current is as good as 37% of the battery capacity. The length of wire cannot be too long, otherwise, the resistance will consume the power. Used for charging rechargeable lithium battery. The ampere meter that detects the current must connect the input connector in series. The input reverse will have no effect on the chip.