Thor Forums

[16ACE27]

I agree, any battery that was in any RV on the dealer's lot will not last 5 years.
Any battery that has been abused (drained below 20% at any time) will not last 5 years.
Sometimes you can do everything right with a new battery and still only get two years out of it. Sometimes it's just the luck of the draw.

But as anecdotal evidence, in April it will 5 years since we bought our ACE used. During the PDI I discovered the house batteries were toast and made them replace them with new ones (two standard RV/Marine Group 31 in parallel). We boondock a couple of times a year and I have installed a DC volt/Ammeter in the inside panel, so it's easy to tell with a glance what the battery bank voltage is and verify the converter isn't "cooking" them (13.1 VDC float).

So far they continue to work as expected. In addition, the OEM chassis battery (which is about a year older) is still going strong as well.