I have a cheap Solar alarm system with an internal Alarm Panel fed by a 12v plug in PSU.
Recently I had a power fail and noticed that the panel went dead.. When I checked the internal Lead-Acid battery it was at 4v and was STUFFED.
Took some advice from our 'Battery Expert' at work and learned that a Lead-Acid battery charges at 14.2 and floats at 13.8 volts.
So I ordered a new battery, installed it, let it charge for a few days and then checked the voltage..
I can currently measure 15.1v across the battery, which seems wrong.. But should I worry about it?
99% of people with alarms wouldn't have a 'battery expert' to talk to and wouldn't even know to worry about this.. It could be a fault on the panel, but equally, it would be just a cr*p design.Should I just live with it like this, or should I try and find a way of bringing the voltage across the battery down a little?