On 12/29/2014 05:58 PM, Keith Lofstrom wrote: > Anybody interested in rebuilding battery packs?
On Mon, Dec 29, 2014 at 10:46:21PM -0800, King Beowulf wrote: > These days I just hunt Amazon, or Batteries+ (local PDX-Vancouver, > also can special order), for a good deal. I've done that, many times, which is why I have the pile of depleted battery packs. The Chinese knockoffs are far cheaper but do not last as long as the Lenovo packs, which use high quality Panasonic cells. At some point, my venerable laptops (which do my tasks far better than modern crap designed for passive media consumption) will be too uncommon for the market to support, and new battery packs will no longer be for sale from Lenovo or China or anywhere; even a stockpile of "new" battery packs will decay with time. That is why it is exciting that the cells themselves are available, still in high demand for other consumer goods, and retrofittable to rebuilt battery packs. Fuses can be stockpiled, too; unlike high energy chemistry bombs AKA battery cells, fuses and circuit boards rot very slowly. I expect to waste a few depleted packs learning how to do it right. I presume I can modify the packs with screws so I can keep rebuilding with new off-the-shelf LiIon cells for a very long time. That means one less barrier to Really Long Term Support. The big problems are (1) attaching the leads, and (2) teaching others how to to this, some of whom might prove to be litigious idiots. Fast spot welders deposit very little heat beyond the weld, and idiots and their lawyers are a curable social disease. Keith -- Keith Lofstrom [email protected] _______________________________________________ PLUG mailing list [email protected] http://lists.pdxlinux.org/mailman/listinfo/plug
