I've purchased a used boat that came with the following:
- D18S/T3 Battery: AJC 12V 18Ah Sealed Lead Acid – AGM – VRLA Battery (photo)
- SunForce Solar Panel: 1.5 Watt, 12-Volt Solar Power Sports Battery Maintainer (photo)
The solar panel is continuously connected directly to the battery.
That makes me wonder, is there a risk of the solar panel overcharging the battery? Or does the battery have a mechanism that stops the incoming charge when it's fully charged?
Admittedly, I don't know if it's physically possible to overcharge a battery. Maybe it isn't.