Batteries

I brought the four domestic batteries home from Syncopation at the weekend. On our last voyage the batteries were flattened when we lost the Travelpower and then tried to bake a cake in the electric oven. I've run the engine for only a few hours since then and have been concerned about the batteries' state of charge.
I discovered that it's rather difficult to remove the batteries from thebox
they are housed in because it was installed before the frame that supports the engine room floor. To make life easier I think I'll have to make a door in the side of the box that I can remove the batteries through. It will need to be strong enough to stop the batteries falling out as well. I suspect I also need a new charger at home because the one I have takes more than 24 hours to charge a 110 Ah battery. At this rate it will take most of the week to charge all these batteries.