charging house batteries
We have a 2012 Coachman Mirada. Do the house batteries charge while driving or do they only charge when plugged into shore power or with the generator running? A week ago I went to check the RV like...
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A 1.5W solar charger will barely send current to a typical motorhome's chassis battery. I'm not saying it's entirely useless, but it likely is not be sufficient to even keep up with the inherent self-discharge of the chassis battery in warm weather.
Whether it could in theory help charge the house batteries depends on the specific design of the isolator system, but generally it would not. Most are triggered either by the actual ignition circuit (often the simplest system) or by sensing the voltage on the chassis battery and engaging when it's high enough to indicate charging, say 13V or so. A tiny solar panel will not increase the voltage sufficiently.
Whether it could in theory help charge the house batteries depends on the specific design of the isolator system, but generally it would not. Most are triggered either by the actual ignition circuit (often the simplest system) or by sensing the voltage on the chassis battery and engaging when it's high enough to indicate charging, say 13V or so. A tiny solar panel will not increase the voltage sufficiently.
