Battery Equality Monitor Circuit Schematic


Posted on Feb 5, 2014

Almost all 24V power systems in trucks, 4WDs, RVs, boats, etc, employ two series-connected 12V lead-acid batteries. The charging system can only maintain the sum of the individual battery voltages. If one battery is failing, this circuit will light a LED. Hence impending battery problems can be forecast. The circuit works by detecting a voltage di


Battery Equality Monitor Circuit Schematic
Click here to download the full size of the above Circuit.

fference between the two series connected 12V batteries. Idle current is low enough to allow the unit to be permanently left across the batteries.




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