bhncb Posted September 1, 2022 Share Posted September 1, 2022 36 minutes ago, roguebooks said: I unplugged the trailer and will monitor throughout the day whether the batteries hold or not. Nothing is running, no lights or fans. One concern was the ah readout which said 0.2. Shouldn't that reading instead represent a full charge after being plugged into shore power for over 12 hours? Hmm The 0.2 Ah is the charging rate of the solar controller in float mode, not a state of charge indication. In order to preliminarily test if battery charge is holding, during the day, you need to cover your solar panels with a blanket to darken them so the controller/display is completely off. Then, along with being disconnected from AC shore power, trip the main DC circuit breaker to remove all loads. At the end of your test period, reset the DC breaker in order to read battery voltage on the SeeLevel monitor. They should be 12.9-12.8 volts. Even so, based on age and stress from depth of discharge, they will likely fail a load test. 1 1 Link to comment Share on other sites More sharing options...
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!Register a new account
Already have an account? Sign in here.Sign In Now