I just installed a battery monitor on our 2018 ACE 30.4 in anticipation of replacing the 2 12v wet batteries with three 12v AGM batteries, and noticed readings similar to those in this thread. The house batteries weren’t charging with the engine running and the chassis battery wasn’t charging on shore power. Sure enough, the chassis and house battery leads were misconnected on the BIM 160. Switched the leads and all good now. I’ve been driving this for three years thinking the house batteries are charging when we’re driving. Luckily most of the places we visit have shore power to plug in to.
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Tim Smith
former USN Aviator
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