i have heard (but cannot confirm) that the spot-welder part of things can be a bit tenuous. especially since li-ion cells have a predilection for "rapid venting with flame"
I also seem to recall something about inter-cell variation and charge balancing that's impractical for the home tinkerer but the details escape me. there's probably a more detailed pro/con/howto on candlepowerforums, the probable source of my hearsay. regardless, I'd be interested in the outcome. On Dec 29, 2014 6:47 PM, "Larry T" <holgat...@gmail.com> wrote: > Always interested in different things, and this sounds different. I may > be able to borrow a styrofoam knife for a trial run, I'll check tomorrow. > > Larry T > > On Mon, Dec 29, 2014 at 5:58 PM, Keith Lofstrom <kei...@gate.kl-ic.com> > wrote: > > > I have accumulated a bunch of old Lenovo T60 laptop battery > > packs that don't hold a charge. Lifting the label - the > > cells are standard, perhaps replaceable by new ones. > > > > Anybody interested in rebuilding battery packs? > > > > My packs are glued or plastic-welded together, so I would need a > > hot knife to open them, appropriate adhesive to put them together > > again, a small spot welder to tab the batteries, and presumably > > a ventilated space to work, in case a cell catches fire. > > > > With enough participants we could buy the right tools and buy > > cells in bulk. Not sure how many types we would need. My T60s > > and X60s both use CG18650 cells, which are $39 for 12 Panasonic > > cells on eBay, $499 for 360 cells. Chinese cells might be > > cheaper (both ways). > > > > This cell size is often used for "vaping"; does that push price > > up or down, or merely attract dangerous counterfeits? > > > > Keith > > > > -- > > Keith Lofstrom kei...@keithl.com > > _______________________________________________ > > PLUG mailing list > > PLUG@lists.pdxlinux.org > > http://lists.pdxlinux.org/mailman/listinfo/plug > > > _______________________________________________ > PLUG mailing list > PLUG@lists.pdxlinux.org > http://lists.pdxlinux.org/mailman/listinfo/plug > _______________________________________________ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
