I'm contemplating switching all interior lights to 12V while maintaining a 30 amp 120 circuit to power the occasional toaster etc. while attached to city power.
We often end up at established "tent sites" without power or boondock on BLM land for a couple days at a time. Longer trips usually include sites with power sprinkled in too. I like the idea of all interior lights working all the time as opposed to having some being non functional depending on our power supply situation. I'm thinking I'll rewire the vintage 120 switches and fixtures with 14 gauge wire and A19 LED 12VBulbs.
Power draw would be:
A couple LED lights for a few hours each night
Brief use of water pump to wash hands, rinse dishes and brush teeth
Occasional USB phone charger use
Propane fridge controller (or whatever it needs 12V for)
Fantastic fan (I think I've run the one I currently have for 10 minutes over the last 2 years)
Power source plan is to have a 12V deep cycle wet cell battery that will be permanently attached to a Battery Tender trickle charger so whenever we're attached to city power it will be charging. ***Question here*** Would it be worth it to get a charger/converter instead of using the battery tender? If I accidentally draw the battery down too far I believe the charger/converter would immediately power the 12V system when attached to city power as opposed to waiting for the battery to recharge or be replaced?
Battery leads will go to a blade fuse box and then off to each fixture, etc. I'll run a dedicated ground wire to each one.
Unless there is an obvious issue I'm planning to reuse the original 1961 120V electrical box and circuit breaker all rewired with new Romex...
Thoughts? and thanks!