Battery Voltage Monitor
Built this little battery monitor a while back. I picked up the readout at a flea market for $4 and mounted it in a small box. The switch on the side turns the display on/off. Sure makes for a quick ...
Forum Discussion
smkettner wrote:
The biggest difference is one chart is a disconnected battery rested 48 hours and the other chart is a battery in moderate use (up to 25 amps).
Resting 12.24 is 50%
Under load 12.06 is 50% (see 12v side of life)
JMHO
Actually, the charts I was looking at all claimed to be open circuit. For example, the Trojan web site lists 12.1 at 50% open circuit.
For loaded, the voltage at 1 amp would have to be quite different from 25 amps, and voltage at 25 would depend on the size of the battery.
JMHO
