korbe wrote:
We have 225ah of battery and we use about 15 - 20 ah per day.
That would be
really conservative for most ... to the OP, think more in terms of at least twice that rate of consumption, maybe a 3 day long weekend with that pair of batteries you have, depending on exactly what they are. A 1K genset certainly will take it's time restoring a pair of batts from 50% to 90% but a 2K may not do all that much better if you're running a garden variety WFCO converter as so many are which can't even get out of it's own way when charging. :M For a more accurate assessment you'd have to provide more specific info about the batteries and converter / charger you intend to use.