Well technically - no you shouldn't; a high capacity battery connected in parallel to a lower capacity one may not get fully charged, and the smaller capacity battery may get overcharged, thus shortening its life... In fact, you should really only use two identical batteries of the same age: but that said, I wouldn't really worry too much, Bongos are pretty resilientmikeonb4c wrote:Useful info there Dave. My LB is 110Ah and the one I've been using in parallel is 75Ah. Any views on that? Should I not be doing it?dp bradford wrote:If you're going to connect two batteries in parallel it's best if they're both the same capacity in Amp-hoursmikeonb4c wrote:If you can rig up suitable switching for when parked up, and provided the main starter battery is happy starting the Bongo on its own, then you could connect the second battery in parallel with the leisure battery and you'd have a lot of useful leisure battery power for e.g. wild camping use.![]()
Dave![]()

Take a look here for a slightly more techy answer

Dave