Forum Discussion
profdant139 wrote:
Jim, how do you get ten days out of the batteries --do you have solar??
Have been looking at solar for years but can't afford it. We do a lot of little things to make the batteries last. We didn't have a generator at first, so we had to learn how to milk the batteries. I have 2 separate batteries, both Lifeline AGM group 31 which are a bit expensive (around $350 each), but work great. I don't baby them, (leave them in the trailer year round) through Michigan winters. I've had one for 9 years and one for 7 years without any hint of failure. Replaced the 9 year one last year as I was starting to get a little worried it would quit on me some day. Still use it in the garage as it holds a charge almost forever. They go through a 3 way switch so I can run each separate. I use one until it's down to about 75% then switch to the other battery. That way if I drain one accidentally I still have a backup. The Lifelines can be run down to zero without damage (I've done it accidentally several times) but I wouldn't recommend it as I'm sure it shortens the battery life. When I charge them I do each separately also.
I also use an ammeter in line so I can monitor current draw (biggest draw is the furnace at about 7 amps). I've replaced all the bulbs with LED's. The standard bulbs can draw an amp or more per bulb, whereas the LED's are about 1/10 of that.
We make a point of minimizing battery use by using a propane lantern outside at night, and have flashlights for inside the trailer. Also have a Coleman coffee maker that works on the propane stove. I'm not saying my way will work for everyone, but it works for us.
The ammeter is a zero center (I've replaced it with a 30A version) so I can see charge or discharge. I installed a digital volt meter that can show me the state of charge also.
