Vulcan Rider wrote:
Matt_Colie wrote:
But before you go and buy new batteries, go shopping for a good converter/charger (Progressive Dynamic, Xantrex or Iota) and get the smart 4 stage version.
IF....this is a unit that just sits more than it is actually in use, why "waste" the money when a simple automatic battery tender will serve the purpose very nicely and should cost less than $50.....and is portable too.
Because, with a constant voltage converter, every time the RV is connected to shore power, the batteries will be seeing that voltage, whether it is right or wrong. With a bank of two-6V's it will be wrong almost all the time.
If the batteries are discharged and the RV is returned to storage, the battery "tender" will not charge the batteries correctly.
For someone that likes a hands-off approach to battery maintenance, a small solar module with controller and either the water miser caps or AGM style batteries, would be a good solution.