On Sun, 8 Feb 2015 10:15:07 -0800, Rocket J Squirrel
<camping.elliott@GMAIL.COM> wrote:

>"Maybe it doesn't even matter."
>
>If they are in fact wired in parallel, then nope, it doesn't matter.
>
>--
>Jack "Rocket j Squirrel" Elliott
>1984 Westfalia, auto trans,
>Bend, Ore.
>
>On 02/08/2015 08:37 AM, Dennis Jowell wrote:
>> I'm going to install 3 -UB 122230 -12V 22Ah AGM Sealed Deep Cycle
Batteries in my Westy. Installed in parallel. My question is how to
charged them with my on board charger? Do I put positive on #1 battery and
then put negative on #3 battery or just use #1 battery to charge all of
them together.? Maybe it doesn't even matter.
>> (1988 GL Westy full camper)
>>
>> Dennis
>>
>> Dennis Jowell
>> Scotch Hollow Farm
>> Newbury, Vermont
>>

Dennis, I would suggest you wire them as you stated. I had my aux
batteries wired the other way and it killed a brand new battery. When I
took the battery back to be tested it had lost half of its capacity, tho
it would charge. One bad battery in parallel can bring the others down
with
it.