Battery Compatability
I'm about to put a new house battery in my '94 Tioga. I picked up a Walmart deep cycle with 110ah for $75+ with a 2 year replacement warranty which seems to be a good deal. I've been reading ab...
Forum Discussion
wolfe10 wrote:
Several reasons not to mix an old and new battery, but a major one is that the old one will kill the new one. Here is how it can work: a cell in the old battery goes bad. Your charger, even a smart one knows to charge at a certain voltage. If it sees voltage is low because of that bad cell, it will keep charging the batteries. This OVER-charges the good battery. That is why battery failure is often accompanied by batteries boiled dry and swollen cases-- severe overcharging.
The reason for not mixing battery technologies is that each has a "preferred" charging algorithm. With a properly programmed smart charger or smart inverter/charger is can be specifically tailored to a battery technology.
This does not mean that you can't mix a new wet cell with new AGM, as their charging algorithms are pretty close, but it is not the ideal setup.
X2 can be done but not the best way to do it you will end up buying more batteries in the long run buy them in pairs and the same cca and brands would be best
