I too camp alot off the power grid and currently have 255AHs of battery capacity which runs all the 120VAC things we want to use from an Inverter and the 12VDC items direct connected to the battery. With what we are running our battery bank discharges down to around 12.0VDC (Approximately 50% state of charge) by 8AM the next morning. This is when we want to re-charge the batteries back up to their 90% charge state in as little as three hours time using smart mode charging technology with the trailer shore power cable directly connected to the 2KW Honda generator 120VAC receptacle using a RV30A-15A long adapter from WALMART.
Camping here on the East side of the US it seems most of the camp grounds have generator run time restrictions so the three run time fits most of the allowed times.
We can do this 50% to 90% battery bank charge cycle for a good two weeks time without doing damage to our battery bank at which time we must re-charge the battery bank to its full 100% charge state. Not doing this after the 14 days or so will start doing damage to our battery bank...
Just passing on how we manage our batteries when camping off the power grid...
It does take some planning and beefing up to be successful.
Roy Ken