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A decade ago (?) I replaced my coach battery in my 91 Odyssey with AutoZone's DuraLast 24MS-DL. I added a solar panel somewhere around the same time, and never thought about the battery again. The last time I dry-camped - a year ago - I experienced a 1 or 2-minute power outage each time the water-pump was powering the shower while a light or two was on. I forgot about it until this week. That's because I'm headed off for that same 6-day desert camping trip in a few weeks. I've assumed that it's probably an old battery issue, and that I may as well replace the coach battery. I contacted AutoZone, and learned that the 24MS-DL is no longer made, but they sell something called the 24MS-DL, which is a bit longer. Then I started reading-up on batteries, and learning that a duel-purpose battery is silly, and a battery that brags about its cranking amps is silly, and that a 27 is better than a 24, etc etc. Now all this is irrelevant. That's because, an hour ago I removed the battery from the exterior-hatched compartment, and measured the chamber. It's 7 1/4' wide, 10 3/4" high, and 10 5/8" deep. Houston, We've got a problem! The new DuraLast is 11" long, and a quick google shows that the Walmart EverStart is also 11" long. They will not fit! Anyone have any ideas for an appropriate deep-cycle battery that will fit in a battery compartment that's only 10 5/8" deep? Thanks! Bill in SF