Winter battery maintenance

[cdcrumba]

This is my first winter with our 96 Winnebago 37 RW. I have to store it in a storage lot and need to know what to do with the batteries for the winter. I believe I have one coach battery and 2 house batteries. I have heard to bring them home and put on a trickle charger in the garage. I have also heard of using a dashboard solar charger plugged on the the cigarette lighter. Any advice would be appreciated.

[2oldman]

Winterize batteries Oct2009
Stay plugged in in storage?
Stay plugged in roast batteries?

[Lwiddis]

Keep your batteries at 85% or more and you are good to -67 per Trojan. See http://www.trojanbattery.com/pdf/WP_DeepCycleBatteryStorage_0512.pdf

Instead of a dashboard unit consider a real solar system for camping and storage.