I am wondering if our battery is on the way out? I would value your opinion. Normally the battery will charge up to 13.7v, but since 26/07/2020 it seems to stay around 12.5v. Problem is that at 12.5v the moment you want to use the movers etc, it grinds to a halt. It won't even lower the satellite dish. On Tuesday we cleaned the solar panel. Today a very sunny day but still reading 12.5v. Battery is AGM Yuasa 100ah and is just under 3 years old. I do have a spare 110ah Numax battery that is about 4 years old, but has hardly been used.
Cost of replacing the AGM battery is not cheap, but if we have to replace it we would prefer one with a long warranty. A 110 or 120ah probably will be best if it will fit.
Cost of replacing the AGM battery is not cheap, but if we have to replace it we would prefer one with a long warranty. A 110 or 120ah probably will be best if it will fit.