My last battery was from NAPA, and lasted 10 years. My Panel gets driven at least weekly May/June/July/August/September. When it goes into storage in October I pull the battery, put it in the basement on a wood block, charge it in April, put it back in the truck. Naturally, I replaced it with another from NAPA, as I figured 10 years is exceptional service life for an automotive battery. I get about 4-5 years out of NAPA batteries in my winter beaters/daily drivers, so go figure!
