Excellent in-depth info thanks Dana Orzel C: 208.721.7003 E- d...@solarwork.com
> On Jan 19, 2022, at 9:58 AM, Alex MeVay <a...@sunforgellc.com> wrote: > > Generally, storage or use at cold temperatures shouldn't be an issue, > as long as the battery can still deliver enough power to operate the > tool effectively. > > Charging though...at cold temperatures, ion mobility goes down. If > the battery is charged too fast, the lithium ions can't make it into > the graphite anode fast enough and they start to plate out as metallic > lithium. At best, this results in a permanent reduction in capacity. > Next worst from there, the lithium metal can create an internal soft > short, immediately or at a later point in time, resulting in high > self-discharge or a dead cell. Worst case, it turns into a hard short > and a fire. > > In theory, the BMS or charger should prevent charging too fast or too > cold, but who knows if an edge-case like this is actually implemented > correctly on any particular battery system. Be careful charging! > > Alex MeVay > > Genasun * Blue Sky Energy * http://sunforgellc.com > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > _______________________________________________ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org There are two list archives for searching. When one doesn't work, try the other: https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out or update participant bios: http://www.members.re-wrenches.org
