Originally Posted by sneebot
Looks like the house batteries are indeed completely dead. What is the recommended replacement for a 2009-- Lifeline AGM 24T??
As long as they'll fit the battery box, that is the best choice. Which brings up the question, where are the house batteries on a 2009? I'm not familiar with the 2009 models, so I'll run through the litany of pre-2012 locations that I know of from others here on the Forums
If memory serves, on the Interstate that started life as a Sprinter 2500 (no dual rear wheels), there is one house battery under the passenger-size front seat.
On an Interstate that started as a Sprinter 3500 with twin beds, they're easily accessible and side-by-side under one of the beds.
On an Interstate that started life as a Sprinter 3500 and has the sofa/lounge layout (like mine), it's on the passenger side under the sofaŚ and you can't access the battery box without power to the sofa. Which means hooking up to shore power since with dead house batteries you don't have enough power to start the generator. If this is what you have, let me know and I'll tell you how to disassemble the sofa.