I am planning to make my Home Web Server v3.0 as solar powered with cheap equipment called PICO PSU. Turns out, that we cannot use the 12v battery as direct energy source. It’s better to buy an expensive inverter than to make the circuit direct. Brisky 12v Pico PSU is used to power up a mini-ATX computer motherboard. It can be used to save electricity when you have Home Server, POS, etc.