Hi all,

I have 2 20 Amp hour lead acid batteries i think made for a motorcycle . Just wondering how long can a dell laptop run on a single charge (not going into the danger zone) I don't want to damage the batteries so I have been told not to go below 22 volts? Can someone on this. Also how long would a standard car battery power a laptop using an inverter 200watt max, i dont think the laptop uses the full 200 watt sorry this is all greek to me...

Ty