There are twenty-four of them in one big steel box. Flooded cells. - Peter -----Original Message----- From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jay Peltz Sent: Tuesday, November 27, 2012 4:48 PM To: RE-wrenches Subject: Re: [RE-wrenches] Info On 2 V batteries Please
Hi Peter Are these 12 batteries in a large single steel case? And are they flooded or VRLA? Thx Jay Peltz power Sent from my iPhone On Nov 27, 2012, at 1:31 PM, "Parrish, Peter" <peter.parr...@canyons.edu> wrote: > We recently purchased a battery powered forklift, with 24 ea. 2V batteries. > Approximate dimensions: W=5", L=6-3/16", H=~21" (hard to tell). Enersys is > stamped on the top. > > The battery supplier claims the batteries are "24-85-13" but this refers to a > 24V battery as far as I can tell. He also claims that the batteries are rated > at 510-550 A-hr. I am assuming that the lower number is for 6 hours discharge. > > I would like to know more about the batteries. Also, how to discharge / > charge them. Should they be run down to 20% SOC and then fully charged? What > if we don't use the forklift for a week at a time? > > Based on my experience of using AGM batteries, it would seem that the Bulk > charging rate should be some percentage (e.g. 20%) of the 6-hour ampacity, > then there is a constant voltage absorption charge (e.g. Vabs=2.385 V), and a > switch to Float when the charging current drops to some low percentage (e.g. > 0.5% of capacity), and the Float voltage being 2.125 V. Again everything at > 25 deg C. It seems like the forklift guys like to refer everything to a 6 > hour capacity, which may be related to the maximum typical daily usage. > > What is the relationship between Voc and SOC after resting the battery for 6 > hours at 25 deg C? > > Thanks in advance for your help, guys. > > - Peter Parrish > > Alternative Energy Department > College of the Canyons > peter.parr...@canyons.edu > O: (661) 362-3888 C: (323) 839-6108 > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > 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: RE-wrenches@lists.re-wrenches.org 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: RE-wrenches@lists.re-wrenches.org 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
