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 charging source is a fixed voltage. Nothing I do will change that known set point. If I see the battery within .1 of the known voltage I would charge one additional hour and be done"
But how does one 'see' that the battery is within .1v while charging? The remote meter would only display the charging voltage, not the battery's voltage until it was fully charged and no line drop. I'm at a loss as to how you accomplish such a task with a remote meter?
And besides, I am talking about the ability of a remote voltmeter to give an accurate indication of battery S.O.C., which it simply cannot due if it only displays to the 10th of a volt. If the bank is at 12.11v, but the meter says 12.2, this could represent dozens of Ah's needing to be replaced. But for the same time and money, one can install a two decimal place meter and have a much more informed idea of soc. In this case, more data is indeed more information.
"The charging source is a fixed voltage. Nothing I do will change that known set point. If I see the battery within .1 of the known voltage I would charge one additional hour and be done"
But how does one 'see' that the battery is within .1v while charging? The remote meter would only display the charging voltage, not the battery's voltage until it was fully charged and no line drop. I'm at a loss as to how you accomplish such a task with a remote meter?
And besides, I am talking about the ability of a remote voltmeter to give an accurate indication of battery S.O.C., which it simply cannot due if it only displays to the 10th of a volt. If the bank is at 12.11v, but the meter says 12.2, this could represent dozens of Ah's needing to be replaced. But for the same time and money, one can install a two decimal place meter and have a much more informed idea of soc. In this case, more data is indeed more information.
