Ujjdwiurgh 1PC Fast Charging Motherboard Module Bidirectional Buck-Boost for Power Bank Accessories

Power supply 12 ~ 16.8V, with voltage protection, temperature protection, thermistor probe, with current and voltage display, key switching function, using solid state capacitors, high-power pure copper wirewound inductor, thickened PCB circuit board, the default setting of 4 series, can change 2 ~ 5s series, contact customer service chat two-way lift function, input 5V-20V can be, the maximum of 100W, pps5 ~ 20V since the Adaptive usb port support 22.5W fast charging Support up to 100W input or output Combination of battery precautions: battery voltage, internal resistance, capacity to be paired, battery voltage in the combination of 3.7V or so, do not higher than 4V to combine ( not be activated), just combined with no output with a 16.8V voltage charging activation can be (pass a power on it).