Forum Discussion
JiminDenver
Sep 19, 2015Explorer II
Put the trailer in your drive and turn on the furnace blower on for 20 minutes, off for 20 minutes over and over while watching the battery voltage. It doesn't need to be cold or at night and the burner doesn't have to fire up to run the blower. You should get a rough idea of how long the battery will last.
Every trailer is different, even more so with different users. Our trailer has gone two nights and three days with the furnace set low on nights with temps in the mid 20's. All we had as a battery was a grp 27, 95 Ah marine and I knew it wouldn't make it when we extended the trip. After the third day we turned the truck around and hooked up a heavy set of jumper cables while running the truck a hour or so before bedtime. It wasn't the most efficient or even the best charge for the battery but we never ran out of power either.
Every trailer is different, even more so with different users. Our trailer has gone two nights and three days with the furnace set low on nights with temps in the mid 20's. All we had as a battery was a grp 27, 95 Ah marine and I knew it wouldn't make it when we extended the trip. After the third day we turned the truck around and hooked up a heavy set of jumper cables while running the truck a hour or so before bedtime. It wasn't the most efficient or even the best charge for the battery but we never ran out of power either.
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