The batteries are only about 1.5 years old and have been kept charged over that time. I run the generator about 3-4 hours each day and check the water level regularly.
YES....BUT what converter/charger do you have, how big, how many amps
that 3 hrs should be good for doing 50%~90% recharge, if you have a 40amp smart charge converter
an old 'magtec converter' doing a 6 amp charge would takes days to recharge your batteries
using the charge function built into some portable gensets does not produce a full charge, they have a very low charge rate approx 8amps