correct use of battery tender and....
1996 Winnebago Class a Vectra. Has on left of dash AUX Bat On/off switch. I have two 6 volt deep cycle batteries cinnected 20ah Cap 235. 132 nin @ 75 amps. I also have a convert er/charger that inass...
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I use a Xantrex echo charger to charge my engine battery off the coach batteries. The echo charger connects from the coach batteries to the engine battery. There is nothing to do or switch or worry about. As long as the coach batteries are charged to a certain level, the engine battery will be charged. It's pretty much set it and forget it. If the coach batteries drop below a certain level, it stops charging so all of your batteries don't run down. It's a no brainer.
