Hello,
I have a 12-volt sealed lead acid battery, not a car battery, which I
use occasionally, which I charge with a 3-amp smart charger.
Does anyone have either an idea for a circuit or a source for an
audible device which will let me know when the battery's voltage drops
below 9 volts?
I have a 12-volt motor out of a computer fan. But I don't know what
the minimum voltage is on which it would run.
Thanks in advance for ideas.
Don Roberts