We had a HUP cell freeze and crack once, and it didn't leak out. I just double checked with Northwest Energy Storage, and they confirmed that the steel casing will contain a spill, and doesn't have drain holes. They said that in one case, a customer overfilled the batteries, and that the casing actually held several gal.s of overflow. Also, I mentioned previously that the casing was powder coated, its actually an epoxy coating.
R. Walters [email protected] Solar Engineer On Apr 30, 2010, at 11:06 AM, Kent Osterberg wrote: > Ray, > > I haven't installed any HUP batteries in several years so my info may be out > of date but the steel case on the older HUP batteries had drain holes on the > bottom. > > Kent Osterberg > Blue Mountain Solar, Inc. > > > > R Ray Walters wrote: >> >> I haven't seen a problem with concrete, but wood definitely rots out when >> exposed to acid, including pressure treated. >> (Saw a system with Battery shelving made from wood where the top shelf >> collapsed from acid rot......) >> Acid also eats foam board, unsticks silicon seal, and gets under and >> dissolves the spray-on bed liner ( our last attempt at corrosion protection) >> >> I worked on one system with a simple lining made of heavy plastic sheeting, >> that actually contained long term several gallons of acid from a set of >> cracked L16s. >> The plastic options mentioned would probably be good, if they're not too >> expensive. I've had the plastic tubs crack from the battery weight though. >> Since HUPS come in a powder coated heavy plate steel container that hold any >> spills if the inner liner is damaged, I haven't tried to exceed the >> manufacturer's efforts. >> (although, we recently had an inspector require us to ground all the cases, >> but there was no grounding point provided....) >> >> R. Walters >> [email protected] >> Solar Engineer >> >> >> >> >> On Apr 30, 2010, at 9:21 AM, Mick Abraham wrote: >> >>> Hi, Mechanix~ >>> >>> My "customer du monde" has a dirt floor in the battery space but he's >>> willing to build something on which we could place his "wet" type >>> batteries. >>> >>> Concrete is strong but it also tends to begin dissolving when battery acid >>> gets on it. Been there, seen that, didn't like it. >>> >>> Wood could be strong but what about the dissolving problem? Would pressure >>> treated wood be better than white wood, redwood etc.? >>> >>> OR: what else would the group advise for a support structure? >>> >>> ************************************************************ >>> >>> The above questions assume that whatever we do will probably get wet, but >>> that may be too pessimistic. Could someone give me a mini-review of plastic >>> trays which would protect whatever goes beneath? >>> >>> I'm pretty sure polypropylene is the right type plastic but short of custom >>> welding by a plastic fabricator...where can I find trays which fit OK with >>> floor scrubber type battery case dimensions? >>> >>> Thanks all around, >>> >>> Mick Abraham, Proprietor >>> www.abrahamsolar.com >>> >>> Voice: 970-731-4675 >>> _______________________________________________ >>> List sponsored by Home Power magazine >>> >>> List Address: [email protected] >>> >>> Options & settings: >>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>> >>> List-Archive: >>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >>> >>> List rules & etiquette: >>> www.re-wrenches.org/etiquette.htm >>> >>> Check out participant bios: >>> www.members.re-wrenches.org >>> >> >> >> _______________________________________________ >> List sponsored by Home Power magazine >> >> List Address: [email protected] >> >> Options & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out participant bios: >> www.members.re-wrenches.org >> >> >> >> >> No virus found in this incoming message. >> Checked by AVG - www.avg.com >> Version: 9.0.814 / Virus Database: 271.1.1/2845 - Release Date: 04/30/10 >> 04:34:00 >> >> > _______________________________________________ > List sponsored by Home Power magazine > > List Address: [email protected] > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org >
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