Glad I found Sailnet
Join Date: Jul 2008
Thanked 51 Times in 50 Posts
Rep Power: 9
Re: Huge Voltage Drain Problem - Ideas?
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...
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.
Great minds discuss ideas;
Average minds discuss events;
Small minds discuss people.
The best minds discuss sailing (and a little bit of politics). I don't know why. It's a mystery!