Was charging and replacing bad ones then I added them up! all 12 volt.
3 for cars and Pickup
4 AGM for wheelers and boat ( they don't last like the lead acid ) about 2 years kept charged
4 Lead Acid for boat and trailer
1 New Lithium for electric trolling motor
Ad them up and any maintenance ideas for longer life.
My outside batteries are trickle charged once a month, the rest are stored in the garage and trickle charged a couple of times every winter. Seen to many battery fires to leave a trickle charger on all the time.
