> -----Original Message----- > From: Duo/2400 List [mailto:[EMAIL PROTECTED] Behalf > Of Robert R. Daniel > Sent: Tuesday, February 25, 2003 5:23 PM > To: Duo/2400 List > Subject: [Duo2400] Disassembling seemingly welded cells > > > All the recent talk of duo batteries has gotten me motivated > to rebuild a couple of mine. But I have run into a problem. > The 4/5 non-tabbed cells in the three type III batteries I have > cracked open (and tried to take apart) seem to be welded > rather than merely soldered. > > Or at any rate, if they are, it is a solder that will not melt or > soften under my soldering iron. I have actually torn the metal > strip which conducts the electricity between cells when I tried > to force it to separate from a cell. And on closer inspection, > the point at which it is attached looks more like a minute > arc-welded joint than a soldered joint. > > How in the heck does one separate and remove the cells? > > Thanks in advance. > > Robert
As you observed, the cells are indeed spot welded together, NEVER try to solder directly to a cell, the heat will damage it, also do not replace individual cells in a battery pack, the capacity of new cells will be different from the old ones and they will charge unevenly, this will lead to the pack failing sooner than expected, (you can however sometimes use the best cells from 2 old packs to build 1 good one). if you can, it is best to have the cells professionally welded (spot welding is used as it produces very little heat, and what it does produce is highly localised). otherwise, always use tabbed cells and try not to use too much heat. Ben. ---------- Duo/2400 List, The friendliest place on the Net! A listserv for users and fans of Mac subportables. FAQ at <http://www.themacintoshguy.com/lists/DuoListFAQ.shtml> Be sure to visit Mac2400! <http://www.sineware.com/mac2400> To unsubscribe, E-mail to: <[EMAIL PROTECTED]> To switch to the DIGEST mode, E-mail to <[EMAIL PROTECTED]> Need help from a real person? Try. <[EMAIL PROTECTED]> ---------- Dr. Bott | 10/100 Ethernet for your 2400 is finally here! MPC-100 | <http://www.drbott.com/prod/mpc100.html> RoadTools $30 PodiumPad available at Apple retail stores, $20 Traveler CoolPad at Staples. Both in white for iBooks at <http://roadtools.com> Midwest Mac Parts ][ <http://www.midwestmac.com> After-market parts for Macs. ][ 888-356-1104 ][ MacResQ Specials: LaCie SCSI CDR From $99! PowerBook 3400/200 Only $879! Norton AntiVirus 6 Only $19! We Stock PARTS! <http://www.macresq.com>
