Battery disconnect question

[strausrv]

Just bought a Cougar travel trailer, 2017 RBL26, it has two batteries on hitch and a charger system for storage. When I close in the winter and pull the 30AMP power cord, and hook up the battery maintainer, should I pull the 'BATTERY DISCONNECT " key, so the batteries stand alone.?

















rbs26

 

[Boat Bum]

I would.

 

[T’sOVR&Explore]

Unless they are LiFePo4 batteries, also consider buying a second maintainer for your storage solution. Paralled flooded lead acid batteries have slightly different internal impedance, so using one maintainer won't charge them evenly as a siamese twinned pair.

Disconnect the negative terminal on at least one of them to un-twin them as you connect the second maintainer.

Our legacy motorhome was given a wired in series pair of GC-5 six Volt golf cart batteries instead of the original paralleled twin 12's so that the "one battery doing the work while the other is sulfating" circumstance that exists when paralleling two lead acid batteries, was ended.

All lithium is in both our camping trailers now. Back when we had an inboard gas motor boat before taking up rv'ing our 1-2-Both Perko battery selector switch provided the water toy battery management solution that ought to be there in all two-twelves camper designs..