Re: battery size/series question
Reply #2 –
The oem install batteries on every unicoach made were optima spiral wound batteries.
The spiral design dissipates heat best and that helps as hot batteries are severely overcharged from a normal alternator.
We turned our alternator down as Wolfe suggests to 13.6 volts at the battery to avoid long overcharging drives.
At 100 degrees battery temp I think the correct charging voltage should be 13.0?
I am thinking that the factory use of the optimas was a good compromise judging by the many long term life reports here.
Topic: battery size/series question