Today I had the task of changing out original batteries in an Airstream Interstate. NOT a fun job 1) had to tear the sofa bed apart just to get to the box 2) batteries are special 6 volt (Lifelines) that weigh a ton stacked on top of each other 3) new batteries $380 each! Hopefully they last 10 years![IMG]
Special 6v batteries? Why would they not use the very common GC2 Lifeline batteries (GPL-4CT)? They are nearly as expensive though at about $300 each at a very good price, so might be the same $380 at a walk in retail place.
That is their tall version of the golf cart batteries, which quite a few manufacturers, like Trojan, also make now. Nice batteries as they give 300ah in the footprint of a GC2 battery pair, as long as you have a bit of extra height. They have had that battery for something like 10 years, I think.