I am looking to power a digital game camera that runs on a 6v battery. The big square type. I have added a solar charger however if the flash goes off to often in one day the battery is draned at a time when the solar charger isn’t effective. My thought was to use two 6v in parallel or use a switch that would switch the power source before the battery is run down letting the other battery to be charged by the solar panel
The end goal would be for the switch to be automatic with out having to be present as the camara is 2 hours away.

