Features: * brand new and high quality. *Overcharge protection，use a series of control programs to detect whether the connected device is fully charged, and then prevent the flow of current, so as to achieve the overcharge protection function *Short circuit protection，when a short circuit occurs, the fuse is blown, and the effective device is not damaged *Discharge protection *Overvoltage protection，when discharged to a certain voltage value, the circuit automatically cuts off the circuit to protect the battery *Temperature protection *Reverse connection protection uses the unidirectional conductivity of the diode to realize anti-reverse connection protection. The protective field effect transistor is connected in series with the protected circuit to realize reverse connection protection. Specifications: *Material:ABS *Style: PWM *Size：133*70*21.5mm *Color: as shown *Voltage: 12/24V *Maximum wiring diameter: 15m㎡/6AWG *USB output: 5V/2A *Standby current: