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post #25 of Old 11-05-2013
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Re: Huge Voltage Drain Problem - Ideas?

Originally Posted by JohnZion View Post
Today I noticed (according to the Xantrex battery monitor) that the batteries were being drained at a rate of -40A. The Xantrex also said the batteries were at 37% of charge...
Originally Posted by JohnZion View Post
I did check the batteries individually, they each read 6.22, they are 6 volt batteries. They are hooked together in a series. Would I check the individual cells with a hydrometer?
6.22 volts on a 6v battery is like 12.44 volts on my 12v battery. That seems high for a battery that is drained. Could it be that the Xantrex was not calibrated for zero current?

Suggestion you disconnect the house and starting ground wires from the shunt. (Keep the shunt connected to the negative terminal of your batteries, and keep the small power wire for the shunt connected to the positive terminal of the batteries.) Check the current reading and let us know what it was. Then calibrate the Xantrex to zero current.


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