Charging house batteries
Good Morning I need some expert help and think you guys are the best. My brother has a Winnebago View. I replaced the 2 house batteries with 4 Trojan T145's. I also put in a Xantrex pure sine inverte...
Forum Discussion
BFL13IMO wrote:
there is a mix up there in the charging rate numbers. 10% on a 100AH battery would be 10 amps, so that would be 46 amps on a 460 AH bank. Using 100a on the 460 would be a 22% rate
However, that 10% is for max battery life, being "gentle" and not for RVing where you want a shorter generator run to do the recharge. So now you have a trade off.
Yes. As I said, even Trojan's tech support felt that up to 20% would be OK. The 10-13% number was chosen as it was gentle and would allow a full recharge in the overnight charge time that most users had available. They hadn't done much work in determining the fastest charge rate possible, as faster chargers were more expensive and most customers wanted the longest life with the least expensive chargers to recharge the maximum number of batteries in the typical overnight charge time they had available.
Beyond 20% he thought you'd probably begin cutting into battery life somewhat, but not drastically. He didn't seem to have any test data for any of this, but perhaps there isn't any.
