Alas, I don't have a very technical answer, but I have an 1988 Westy and
when my main battery starts to show signs of age, I buy a new battery for
the main and move the older battery to the 'backup' under the driver's
seat.  Now in my case, that battery gets very light use.  I camp
occasionally and it just is wired to run the interior lights and the radio
and I guess the fan on the fridge - and that's about it.  If it fails while
camping, I'll use a candle or a flashlight and maybe have to buy some ice
to keep a few things cold.  Simple for me.
Just my two cents.

John Graham
'88 Westy - Charlotte, NC

<http://johntakesgreatpictures.com>

On Fri, Dec 12, 2014 at 8:23 PM, Jon VO <jondvo@gmail.com> wrote:
>
> My drivers' side battery box is about 12.5" x 7" x 7". The walls are not
> flat, as there is a protrusion for capturing the battery on the rear
> wall. Also, there is a very slight taper to the walls.  If the target
> battery is smaller than these dimensions, it'll drop in. However, taller
> batteries may work with modifications to the lid.
> The Samba has extensive posts on this exact issue....
> Jon
>
>
> On 12/12/2014 10:09 AM, Edward V Barger wrote:
>
>> OK  thanks  for info   Please   any one have the dimensions of the
>> battery area under the drivers seat  handy
>>
>> I can not find my notes and since am off to the chiropractor  trying to
>> get the lower back in shape for a camping trip over the holidays  do not
>> want to aggravate it messing with the drivers seat to gain access
>>
>> thanks
>>
>> ed
>>
>>
>>
>>
>>
>>  Begin forwarded message:
>>>
>>> Date: December 12, 2014 at 9:19:53 AM PST
>>> Reply-To: Jon VO <jondvo@GMAIL.COM>
>>> From: Jon VO <jondvo@GMAIL.COM>
>>> Subject: Re: BATTERY INFO NEEDED PLEASE
>>> To: vanagon@GERRY.VANAGON.COM
>>>
>>> The enclosed battery chart has dimensions but I would expect small
>>> variations depending on manufacturer.
>>> HTH
>>> Jon
>>>
>>> On 12/11/2014 11:57 PM, Neil N wrote:
>>>
>>>> Same link, both work.
>>>>>
>>>> Musta been a Canada-US website thing for me.     :)
>>>>
>>>> Deep cycle vs not likely the reason for price difference?
>>>>
>>>> Trying to find it, but wasn't there a somewhat similar Diehard battery
>>>> thread on thesamba?
>>>>
>>>>
>>>> On 12/11/14, Karl <tdiguru@westyventures.com> wrote:
>>>>
>>>>> Same link, both work.
>>>>> The Delco battery doesn't say anything about being a deep cycle that I
>>>>> could see.
>>>>>
>>>>> On 12/12/2014 12:33 AM, Neil N wrote:
>>>>>
>>>>>> Link below didn't work for me. This is the same one?
>>>>>>
>>>>>> http://www.sears.com/diehard-advanced-gold-agm-battery-
>>>>>> group-size-94/p-02850793000P?sLevel=0&redirectType=SKIP_LEVEL
>>>>>>
>>>>>> I also see that Amazon has one (literally?) for somewhat less
>>>>>>
>>>>>> http://www.amazon.com/ACDelco-94RAGM-Professional-
>>>>>> Automotive-Battery/dp/B006N91C2M
>>>>>>
>>>>>> but I have no idea if one is built better than the other.
>>>>>>
>>>>>>
>>>>>> On 12/11/14, Karl Mullendore <tdiguru@westyventures.com> wrote:
>>>>>>
>>>>>>  Someone run out and test fit one of these:
>>>>>>> http://www.sears.com/diehard-advanced-gold-agm-battery-
>>>>>>> group-size-94/p-02850793000P
>>>>>>>
>>>>>>
>>>>>>  --
>>>> Neil n
>>>>
>>>> Blog: Vanagons, Westfalia, general <http://tubaneil.blogspot.ca>
>>>>
>>>> 1988 Westy Images <https://picasaweb.google.com/musomuso/New1988Westy>
>>>>
>>>> 1981 Westfalia "Jaco" Images, technical <http://tubaneil.googlepages.
>>>> com/>
>>>>
>>>> Vanagon-Bus VAG Gas Engine Swap Group <http://tinyurl.com/khalbay>
>>>>
>>> Edward V Barger
>> edvbarger@mac.com
>>
>