This is a UPS/PSU for 5V systems It allows charging from a DC source from 8 and up to 35VDC It is charging the battery with 1.5A max current while supplying power to the output. When battery is full, main power source is supplying the output leaving the battery as a backup solution. The output is capable to deliver 5V2A continuously Additional batteries can be connected to relative terminal There is a Power Good signal from the output stage and status indication LED are pulled up to 5V to allow connecting to an MCU. There is also a voltage divider to allow measuring input voltage ...