Battery Tenders
I have two new RV Batteries and want to keep them completely charged. Stupid question I know, but here goes. What size battery tender do I need to get and can I just hook it to one of the batteries in...
Forum Discussion
Sam Spade wrote:
The advice of connect one lead to one battery and the other lead to the other battery only works in a parallel arrangement.
That is not right.
If the batteries are 6v wired in series, you MUST hook the positive to one battery, and the negative to the other battery. Only, you hook them to the terminals that are NOT wired together.
If the batteries are 12v wired in parallel, it does not make a huge difference how you hook the wires as long as the positive is to one of the positive terminals and the negative is to one of the negative terminals. It is only a little more efficient if they are to separate batteries.
BillyW wrote:
I have yet to see a mainstream RV as new as the OPs that doesn't have some kind of multistage charger. Mine is a bottom of the barrel 04 model and has a 3 stage WFCO charger which maintains the batteries nicely.
My 2007 Winnebago came with a cheap Magnatek 7345 single stage converter that always put out about 13.5 volts. It was a battery killer. After about 3 years, I junked it and bought a good 3 stage converter, a PD4655V.
