So I've got an 240v inverter set up in the van.
I've always used just the one battery to power it but now I fancy two batteries which I'll put in parallel so they last longer.
Question is can I run these batteries in parallel and in series somehow so I can run my 24v heater off it directly instead of using my 12 to 24v inverter.
I can't see a way of doing it but might of missed something.