When I needed chassis batteries the last time I was in a RV dealership getting a recall done on my Norecold. I got a quote for Interstates. Then I got on the phone and found Budget Batteries who has 10 stores in the Puget Sound region. Their price was much better. I drove the Beaver to their Milton store and they did all the work of installing them.
The interesting part of the story was that the installer forgot to put a label on. As I was paying the manager, I asked about not having a label with the service start date. He apologized, opened a file drawer, pulled out labels and put them on. Seemed strange, so I asked. He explained that various other companies use them as a wholesale supplier, including Interstate. It still seemed strange to me. After I paid and was leaving I paused at the exit to make room for an Interstate van to pull into the lot!
The Budget Batteries I bought worked as good as any I've ever had. They were about 3 years old when we sold the Monterey.
We were due for new house batteries. My Trojans were 7 years old. My plan was to compare Budget Batteries prices to Costco prices and pick. I've never found anyone disappointed in Costco batteries, but you do the install work yourself. Some say the Costco, Interstate and several other brands are all made by Johnson Controls.
The stock number for Costco 6 volt batteries used to be 245725. Unless they've changed it, you should be able to call any Costco and ask them to do a location search for that stock number and see which store closest to you has them in stock. The website for Budget Batteries is
http://www.budgetbatteriesinc.com/.
If you need a recent recommendation on the Costco batteries, call Marty Schenck. I "helped" him put a set of four last year in his Thunder. He bought them in Oregon to save the sales tax and he runs a Samsung household refrigerator on the inverter with them.
