High Quality WISDUM Waveshare Uninterruptible Power Supply (UPS) Module, Supports Charging and Power Output at The Same Time, 3S & 5V 5A Output, Compatible with Raspberry Pi Board^^It is able to charge the batteries and provide power output at the same time from external power supply. Automatically switch over to batteries output if external power supply is unavailable, keeps
the system running wit^^Brand: WISDUM