Best deep cycle ?

pnichols wrote:

RJsfishin wrote:
Prove it !! AGMs don't last longer, and they cost double. Simple math if ya ask me !

I don't know what "Prove it" means, exactly, in a non-scientific context, but I will say this: I have a couple of 7 year old AGMs still going strong in our RV that are being almost entirely taken care by only the stock Parallax ~13.8 fixed voltage converter in the RV.

Does anyone here have 7 old liquid acid RV batteries that have been, the whole time, taken care of almost entirely by a good old stock fixed voltage converter? If they do, please speak up so as to simultaneously debunk my "proof" while at the same time show that multi-stage chargers are in fact not absolutely required to get superb life out of LA RV batteries.

I have 4 Sams Club golf cart batteries in the rig with 05 stickers on them still going strong!