Discharge current: about 1A non-constant current at most, which is not adjustable and does not support transformation. Suitable battery: it is suitable for batteries that meet the requirements of stopping discharge voltage of 2.5~3.5V and starting from 2.8V to ~4.2V Working voltage: DC5V Charging voltage: controlled by special battery charging chip, the maximum charging time is about 1A, the full charging voltage is 4.2V, and the charging current is less than 0.1A., Weight: 0.2645547144 Pounds, Manufacturer: Hipzeepo