Battery in Michigan winter ?

I've left batteries in the RV and I have taken them out when RV not in use in the bowls of cold weather in Wisconsin.

Trust me taking them out and bringing them inside your house is the way to go! :W

Many in cold country leave it in the rig. The trick is to make sure it is disconnected. The battery will freeze if it is ran down, even though you may think you turned off everything there are things that will draw power (i.e. propane detector, Carbon Monoxide detector, etc...)

So before storage what is best to do is disconnect the batter and then put it on a charger to make sure it has a full charge. What you should have done (maybe you did) a month or two before was check the water level and then add distilled if it needed it. It takes a few charges to fully mix the distilled into the battery acid. So lets say you just added it now that water will float on the top and could possible freeze and crack the case, while the charged acid below would be good to something like -90f.

Other thing is if you do bring it in make sure you don't set it on concrete. This will actually discharge the battery. Place something that's non-conductive (ie wood, foam, etc...) under it.

joesann wrote:
Just picked up our new 5th wheel. Was wondering what to do with the battery for the winter? Should I remove the battery from the coach and keep inside till spring? Thanks for your responce

If the unit is shore powered leave it in place, the converter will maintain it and a charged battery won't freeze in any Michigan winter.

If you are really worried about it, take it out and bring it down to my place and I'll keep it in the warm shop for you, I'm just a bit south of you...

The 5er was winterized prior to delivery I presume? You get it at General RV per chance?

If you can keep keep it charged, leave it in the RV.

There are a few reasonable options; take your pick.

1. If it's not in terrible shape, you can charge the battery fully and physically disconnect it and it will be okay in the trailer for the winter (assuming outside storage). Self-discharge is much lower in cold conditions than in hot/warm conditions.

2. If you have power available at your storage location, you can use the built-in converter to keep it charged by plugging the trailer in. Alternately, you could hook up a separate maintainer and use that instead of the converter; depending on the specific converter model and the maintainer, it may be gentler on the battery and less likely to lose too much electrolyte.

3. You can take the battery out and keep it hooked up at home. It does not need to be inside a heated area, and you probably don't want it in the living space of your house due to the acid fumes etc.

A fully charged lead acid battery will not freeze unless the temperature gets far, far below zero; basically, if you aren't in an actual arctic area, you don't need to be concerned with that. A discharged battery will freeze much more readily.

If you can't keep it charged (maintained) in the RV then yes, I would bring it in and put a maintainer on it.