Wednesday, July 27, 2011

Battery Charge Indicator

Equal Battery Charge Indicator Circuit
The battery charge indicator circuit below illuminates an LED to indicate unequal charges between two 12 volt lead acid batteries. It can be used to verify that two batteries are connected in parallel or isolated since the LED will be off when the voltages are equal within a tolerance, or on if the voltage difference is greater than 100 millivolts.
Battery Charge Indicator Circuit Schematic
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Battery Charge Indicator

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