QUOTE(pianotuna @ Mar 29 2010, 03:37 AM)
Gassing happens at higher voltage charging rates. If you plan on a trickle charger on a timer, I doubt that it will be a problem. Or if a temperature compensated charger is used. Or if a "smart" charger is used.
1% self discharge rate is common for flooded cells. The idea of 12 hours a week of charging is to replace that lost energy.
I would certainly check the water levels before I left--and I would also set up the timer/charger for at least two weeks before I left.
Thanks for your help. I'll follow your advice.