We are nearly finished our camper conversion and are thinking about electrics. We have made the van accessible for electric hook up at campsites. However there may be times when the campsite does not have electric hook up but we would still like to use mobile chargers, laptop chargers etc. We were thinking of some sort of leisure battery hooked up to an inverter.
what mah battery should I use with what rating inverter and what voltage relay switch to connect between the two batteries?
Could someone give me an idea of the complete set up that they have used?