[RE-wrenches] Ideal platform for flooded type batteries

[William Miller]

Joel:

Don't know.

William



At 03:52 PM 5/1/2010, you wrote:
>William,
>Do you use tall batteries like IBE? What is the temperature difference 
>between the bottom of your on-slab batteries and the top?
>Joel Davidson
>>----- Original Message -----
>>From: <mailto:william at millersolar.com>William Miller
>>To: <mailto:jryago at netscape.com>jryago at netscape.com ; 
>><mailto:re-wrenches at lists.re-wrenches.org>RE-wrenches
>>Sent: Saturday, May 01, 2010 10:51 AM
>>Subject: Re: [RE-wrenches] Ideal platform for flooded type batteries: 
>>opinions wanted
>>
>>Jeff:
>>
>>This racking system sounds like it would be a nightmare during an 
>>earthquake.  We have a system with IBE 2 volt batteries that suffered 
>>major damage during an earthquake in our area in 2003.  All of the 
>>batteries tipped over and spilled their entire contents in the battery 
>>room.  Fortunately, these batteries were slated for replacement in the 
>>near future.
>>
>>Now we strap all batteries to the wall with strut and all-thread.  Given 
>>the opportunity, we have the framing reinforced during construction.  We 
>>do not advertise the restraints as an engineered solution, but rather as 
>>a common sense remedy to minor earthquakes.
>>
>>In our hot and cold climate. we favor placing the batteries on a slab to 
>>thermally couple them to a more stable temperature source.  I laugh when 
>>I see an insulated battery box with large vents.  I'm not an licensed 
>>engineer, but it seems pointless to insulate a box and then vent it.
>>
>>We have tried the shower pan material as a liner, but it was not acid 
>>resistant -- it degraded in two years.  Now we use 1/8" sheet neoprene 
>>and build a dam using it and pressure treat lumber to support the rubber.
>>
>>William Miller
>>
>>
>>
>>At 08:47 AM 5/1/2010, you wrote:
>>>As you know, cold floors reduce battery charge.  We use a support 
>>>"shelf" made of pressure treated 2 x 4 on EDGE, separated by 3/8" 
>>>pressure treated plates every 2 feet, using 8 foot long boards.  This 
>>>16" wide by 8 foot long shelf is placed on standard concrete blocks 
>>>spaced every 2 or 3 feet, keeping the shelf  8" above the floor.  This 
>>>puts the battery fill caps at a nice level for re-fill, and the bottoms 
>>>off the cold floor which allows good air flow.  An occasional acid spill 
>>>may cause some minor issues, but we have these shelves in systems now 
>>>over 15 years old with no problems.  The are also easy to site build.
>>>
>>>Jeff Yago
>>
>>
>>----------
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Please note new e-mail address and domain:

William Miller
Miller Solar
Voice :805-438-5600
email: william at millersolar.com
http://millersolar.com
License No. C-10-773985
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