Ok from your prior posts looks like you have an Axis/Vegas.
You can do it in either one of two ways:
- Remove the "computer desk" in front of the passenger seat (flip the desk out, lift up the rubber pads in front, you'll find screws, remove them and the desk will lift out, the wood below it is perforated, cut the perforations, lift battery out)
- Turn wheels to the right and remove battery from passenger side wheel well
I don't have photos of either as our 6 year old coach still has the OEM battery amazingly.
I would bet Ed has the procedure laid out (with photos) in the crowd sourced Axis/Vegas owner's manual found here:
https://www.thorforums.com/forums/f1...nual-4961.html