Date: Fri, 12 Oct 2001 11:26:41 -0500 From: David VanHorn <[EMAIL PROTECTED]> Subject: Re: [LIB] lithium-cells... i found a cheap supply! but are they right???
At 02:14 AM 10/12/01 -0700, Dan Baker wrote: >Date: Fri, 12 Oct 2001 19:08:55 +1000 >From: Dan Baker <[EMAIL PROTECTED]> >Subject: lithium-cells... i found a cheap supply! but are they right??? > >I have found a source for battery packs that contain 12 cells identical to >those in the 50-70 pack, however before I try them I need you guiys to >answer a question or two... I have no way of charging these packs and I >don't know what state of charge they are in, however I am getting about >2.6 volts out of each cell and on a full short they provide about 5-10 >amps... so, I was under the impression all lith-ion batts were of 3.6 >volts... am I mistaken? Don't load them into a short, they don't like it. Max load is usually equal to their amp-hour rating. To charge them individually, set a bench supply to 4.1V (measure on DVM) and limit the current to not more than the AH rating. Connect the cell, and it will charge with no further monitoring or complications. > While hiking I use small solar panel on the top of my pack (the weight > is negligable) to charge a 7ah sealed lead-acid that beast runs the lib > 50 for about 8 hours which is more than enough, it also powers my GPS, > recharges my digital camera battery and Palm V, I then have moving map > where ever I am as well as 5 gig worth of photo storage... You'd be much better off with the same AH of NIMH cells, for weight. I used to hike with gells too, but got tired of the LEAD -- Dave's Engineering Page: http://www.dvanhorn.org Got a need to read Bar codes? http://www.barcodechip.com Bi-directional read of UPC-A, UPC-E, EAN-8, EAN-13, JAN, and Bookland, with two or five digit supplemental codes, in an 8 pin chip, with NO external parts. ************************************************************** http://libretto.basiclink.com - Libretto mailing list http://libretto.basiclink.com/archive - Archives http://www.picante.com/~gtaylor/portable/faq.html - FAQ -------TO UNSUBSCRIBE------- Reply to any of the list messages. The reply mail should be addressed to: [EMAIL PROTECTED] - Then replace any text on the message's subject line: cmd:unsubscribe --------TO UNSUBSCRIBE DIGEST------ Do above but with this on subject line: cmd:unsubscribe digest **************************************************************
