Solar Powered Raspberry PiFirst off we need to connect the wire to car power adapter then to the battery. The battery is a 12V 1.3 ampHour battery The length of time the battery last very much depends on what you are doing with. But here is quick calculation If the raspberry pi uses 3 watts a hour then a 12v battery at 1.3 amp hours gives 15.6 watt hours So 15.6 divide by 3 gives you 5.3 hours. So the battery should last a
