Adding more batteries
I'm fully in the grip of winter up here so contemplating spring projects. I have a truck camper with a battery box that only allows for 2 grp 27 batteries which I have installed now (2 x 12v) I ...
Forum Discussion
Boon Docker wrote:
Bad idea, different charge/discharge parameters. Go with 2 more GP 27's then hook them all together.
Ah the old "All batteries must be identical" Myth.
I run a pair of GC-2 in parallel with 3 Group 29 MARINE/deep cycle.. I use the Sealed G-29's due to their location, if I ever get the system set up the way I want I'll go to 3 pair of GC-2 but in 11 years I've had to replace the batteries ONE time, 3 year ago (The anniversary date for the RV is MAY, the batteries lasted 9 years) No problems.
The only charging prameter that is seriously different is "Max Charge Current" is higher for The GC-2 but a slower charge rate means longer battery life (overall)
