Best apc ups for small load
I have access to free apc smart ups models from 750-2200 including both new and old models. I have been using one for a battery charger/inverter in a small camper. I have 2 50ah batteries attached to an apc 750 right now but my problem is I have very low power draw. I have LED lights and a few phone chargers running and that's about it. Total is about 50w. I picked the smallest ups thinking it would be the most efficient at low power levels but now I am wondering if perhaps a new model 1500 might be better.