Imagine having to remove your front wheel. 

There's a model Chevy car that has the battery in the DS front wheel
well.

Battery placement isn't a major worry for auto mfgs. It's generally an
item that gets serviced once every 4-7years for factory batteries.  Yes
I've had more then 1 factory battery last more then 5 years
Though not in a camper application yet. 

But for ease of access/use that's why I plan on adding a fork truck
connector for my jumper cables.
They stock a mid sized one at my local Napa for $40~

Dan in NY
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From:    Ellen in Oregon <elleninoregon@HOTMAIL.COM>
Subject: Re: Aux battery access woes

Imagine, having to take your seat or steering wheel off just to get to
the
battery!  After I sent my first message to the list, I went back out and
applied a couple of screwdrivers, prying this way and that....voila, a
corner popped up.  I literally ripped the cover out of there (and I
don't
plan on putting it back either) the starting battery has plastic shields
that fit over the terminals; any reason why I can use these on the aux
battery too?  Oh, the good news is, the aux battery is only a little
over a
year old, and the voltage is acceptable (14 volts or so).

Ellen