Also need to remember that checking electrolyte balance / chemistry in wet cells requires unobstructed access to the whole top of the battery (since it's actually 6 x 2V cells in series). Not so much a problem with a big forklift or vehicle applications where you can get to the whole battery, but if they're on shelves in a telecom type environment, you need to disconnect them and pull the whole battery out in order to access the maintenance plugs.
On Tue, May 31, 2016 at 2:24 PM, George Skorup <[email protected]> wrote: > I just use AGM everywhere. Screw maintaining wet cells. > > > On 5/31/2016 11:14 AM, Paul McCall wrote: > > We have 22 towers that have the battery plant indoors. 4 batteries at $ > 100 each vs $ 200 each (Optima D31M) saves $ 400 per tower ($ 8800 total) > > > > We need to be doing routine maintenance and inspection on each tower > anyways every 6 months or so. > > > > The cost savings is something to consider. > > > > For outdoor, we can stick with AGM. > > > > Paul > > > > > > > > *From:* Af [mailto:[email protected] <[email protected]>] *On > Behalf Of *Jesse DuPont > *Sent:* Tuesday, May 31, 2016 11:27 AM > *To:* [email protected] > *Subject:* Re: [AFMUG] Deka 7T31 non-AGM batteries > > > > Adding to what Chuck said, you'd also only want to use flooded batts in a > vented space. AGM are safer in sealed enclosure. > > *Jesse DuPont* > > Network Architect > email: [email protected] > Celerity Networks LLC > > Celerity Broadband LLC > Like us! facebook.com/celeritynetworksllc > > Like us! facebook.com/celeritybroadband > > On 5/31/16 8:27 AM, Chuck McCown wrote: > > Flooded cells will have the lowest price per watt hour and the longest > life if in a temp controlled environment. > > However, they are classified as hazardous materials due to the amount of > liquid electrolyte and that may affect zoning and insurance (if any one > asks). > > I would not use a lead acid flooded cell unless it was in a temp > controlled environment. > > > > If you have 120 batts to replace, sounds like they might be outdoors. I > would use AGM. > > > > *From:* Paul McCall <[email protected]> > > *Sent:* Tuesday, May 31, 2016 7:38 AM > > *To:* [email protected] > > *Subject:* [AFMUG] Deka 7T31 non-AGM batteries > > > > Guys, > > > > We have always used the Optima D31M AGM batteries (just because). Well…. > It’s that time… time to replace 90% of them, and looking for alternatives. > Having to buy 120+ batteries… cost becomes something to at least look at. > > > > My local supplier says that FPL (Florida Power & Light – aka Florida > Flicker and Flash) uses the Deka 7T31 non-AGM batteries (Lead Acid) and > they are a lot cheaper (waiting on price – I found them quickly for $ 100 > each). They are a 100ah batteries. Here is the spec otherwise > <http://www.eastpennmanufacturing.com/wp-content/uploads/Deka-Commercial-Batteries-Flyer-0010.pdf> > http://www.eastpennmanufacturing.com/wp-content/uploads/Deka-Commercial-Batteries-Flyer-0010.pdf > (minus the ah rating which I got from Deka over the phone). > > > > Does lead acid have distinct disadvantages from AGM? Also, anybody using > Li-Ion yet for a tower battery bank? Probably not cost-effective ? > > > > Paul > > > > Paul McCall, President > > PDMNet, Inc. / Florida Broadband, Inc. > > 658 Old Dixie Highway > > Vero Beach, FL 32962 > > 772-564-6800 > > [email protected] > > www.pdmnet.com > > www.floridabroadband.com > > > > > > > > >
