Post by thread:[EE]:Torque... on a battery??

I was just looking at a UPS system that impressed me during the last power outage we had. The interesting thing was the batteries, they are 2.5V batteries bigger than car batteries! I wanted to see what AH rating they were but all I could find was a Torque rating. The rating was 70 inch pounds, what the heck is a Torque doing on a battery?? How would I convert this to an AH rating? Thanks, TTYL -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.

At 07:46 PM 4/14/01 -0400, you wrote: > I was just looking at a UPS system that impressed me during the last power >outage we had. The interesting thing was the batteries, they are 2.5V >batteries bigger than car batteries! I wanted to see what AH rating they >were but all I could find was a Torque rating. The rating was 70 inch >pounds, what the heck is a Torque doing on a battery?? How would I convert >this to an AH rating? Thanks, TTYL Just a guess, but was this written on the battery itself? If so, it's probably an instruction on how tight to tighten the bolts on the terminals (using a torque wrench). IOW, nothing to do with the AH rating at all. Best regards, =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Spehro Pefhany --"it's the network..." "The Journey is the reward" spam_OUTspeffTakeThisOuTinterlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com Contributions invited->The AVR-gcc FAQ is at: http://www.bluecollarlinux.com =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.

I think it has more to do with perhaps how much torque the clamp, holding it fixed in its position, should have before the case is stressed and fractures under it as a result. Adios, LarZ --------------- TAMA - The Strongest Name in Drums --------------- {Original Message removed}

{Quote hidden}> -----Original Message----- > From: pic microcontroller discussion list > [.....PICLISTKILLspam@spam@MITVMA.MIT.EDU]On Behalf Of Spehro Pefhany > Sent: Saturday, April 14, 2001 19:51 > To: PICLISTKILLspamMITVMA.MIT.EDU > Subject: Re: [EE]:Torque... on a battery?? > > > At 07:46 PM 4/14/01 -0400, you wrote: > > I was just looking at a UPS system that impressed me during the > last power > >outage we had. The interesting thing was the batteries, they are 2.5V > >batteries bigger than car batteries! I wanted to see what AH rating they > >were but all I could find was a Torque rating. The rating was 70 inch > >pounds, what the heck is a Torque doing on a battery?? How would > I convert > >this to an AH rating? Thanks, TTYL > > Just a guess, but was this written on the battery itself? > > If so, it's probably an instruction on how tight to tighten the > bolts on the terminals (using a torque wrench). IOW, nothing to do > with the AH rating at all. Perhaps, they had a "retorque" rating of 65 inch lbs. TTYL -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email .....listservKILLspam.....mitvma.mit.edu with SET PICList DIGEST in the body

Spehro is probably right about the torque referring to the bolts. I think that you can estimate capacity by examining the weight (assuming they are lead acid or some other known technology). At that size, weight scales well with capacity. Peter -- http://www.piclist.com hint: To leave the PICList EraseMEpiclist-unsubscribe-requestspam_OUTTakeThisOuTmitvma.mit.edu