maintain your batteries over winter

[talyn]

I remove them from the boat, fully charge them, then keep them on battery tenders in the garage. Periodically I will check them with a charger that tells me the percent charge of each battery. As long as they are in the high 90 percentile I just leave them on the tenders. I never have to add water and I use a hydrometer to check each cell maybe once or twice during the season just to see how the battery is doing.