Thread: Simple solar charger for inactive vehicles?

We've got a range of tractors and vehicles which over winter, don't get used too often. We try to get around them all and give them a say monthly run, but the number of batteries I replace tells me it's not enough.

Is there a cost effective solar panel setup others use? Most of our batteries are NS70 types, I was imagining a simple solar panel w alligator clips that I could source say ex alliexpress- but I figured I need to be looking for specific charging capabilities.

Can anyone advise? If affordable I'd probably buy about six