Gerry hit all the points to a T.
I trailer so only charge batts if the boat sits more than 2 weeks or so w/o being used.
I use a simple low and slow snap-on charger (which means I overpaid for a charger!!!) that is exactly like this one......
https://www.batterystuff.com/all-pro...-021-0128.html
I've always used a pair of Interstate SRM-27's. Charged occasionally during the season, and once a month during the off season.
