Date: Sat, 13 Oct 2001 09:43:40 +0800 From: Raymond <[EMAIL PROTECTED]> Subject: Re: [LIB] 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? > I don't want to put three in my dead batt pack and then over voltage them when they >are charged by the lib... > Anyone got any ideas? Neil? Raymond? (by the way Raymond, I am in Geelong Vic. >where are you?) I'm not a LiIon cell expert but generally speaking the voltage per charged cell for a given battery technology is the same regardless of capacity. Don't short the batteries out though, thats a sure way to kill them young - generally battery packs for laptops won't like to be discharged faster than 2/C (then divide by how many cells happen to be in parallel). Oh and I'm in Perth, W.A. >These packs (12 cells brand new) are available to me through a tech at a laptop firm, >he hasnt got a price yet but he thinks about $150 AUD, for you guys in the UK or USA >they would work out very cheap! If they work I can get a few... Thats not bad! ... What AH rating is each cell? > Next topic: Solar Panels > > While hiking I use small solar panel on the top of my pack (the weight is >negligable) How big is this thing? >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... How long does the panel take to charge the lead acid cell from flat? Or do you charge it first then just use the panel to prolong the runtime? > Using a panel to RUN a lib is not worth the trouble, you would be towing one behind >you on a small tralier to get enough out of it and the fluctuations in current would >cause your lib to get upset and try to hitch-hike home without you... Hehe with the Libby's almost cute looks I could believe you ;-) - Raymond ************************************************************** 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 **************************************************************
