Shore Power Question

Tom/Barb wrote:

dougrainer wrote:

You are confusing charge RATE with continued charging after the Magnum has fully charged the coach batteries. Regardless of the charge RATE, it will go to Float charge eventually and THAT voltage is below the BIRD 13.3 threshold to keep the solenoid that combines BOTH battery banks closed to charge the Chassis battery bank. Both Magnum and Xantrex you can modify the charge rate to your liking. Doug

Call the manufacturer's 1-800 number they will talk you thru the procedure to set the float charge above 13.4, my Magnum will keep my chassis battery charged. and my batteries will not boil like they did on the old Heart inverter/charger.

I read the remote operators manual again for the Magnum and while you may be able to change the FLOAT rate, it is NOT advisable as you WILL boil lead acid non maintenance free deep cycle batteries at that higher CONTINOUS rate of above 13.4 volts. There is a REASON the Engineers at Magnum set that normal float rate. I would not risk boiling batteries at a higher float rate just to "fool" the BIRD type relay. Much better to just install a simple Trickle charger/maintainer on the chassis batteries. While YOU may have success doing that, I doubt the majority of RV'ers would. Doug