Check out Battle Born Batteries out of Reno, they have heater kits available for their LiFePO4 100 ah batteries. Just came out with a 280 ah 8D size, don't see a heater kit for it yet. Will check back in with them soon to see if it's on the shelf.
Chris Worcester Solar Wind Works NABCEP PV Installation Professional Cell 530-448-9692 www.solarwindworks.com ch...@solarwindworks.com -----Original Message----- From: RE-wrenches <re-wrenches-boun...@lists.re-wrenches.org> On Behalf Of Dave Angelini Offgrid Solar Sent: Friday, May 21, 2021 12:33 PM To: RE-wrenches <re-wrenches@lists.re-wrenches.org> Subject: Re: [RE-wrenches] LiFePo4 Low Temp Charging Damage I can think of a few other things for the wish list! l Closed loop charging with multiple sources. Robust BMS design to not be a new source of power failures Offgrid. Spare BMS for sale with product that is servicable. Gets Soc and temp into Insight and Optics A company that will be there when I need them. Too many players in the battery game right now that I do not know of! Only a few that do most all of these for me. Friday ! Dave Angelini Offgrid Solar "we go where powerlines don't" http://members.sti.net/offgridsolar/ e-mail offgridso...@sti.net text 209 813 0060 On Fri, 21 May 2021 12:24:11 -0400, Ray <r...@solarray.com> wrote: > This is the only company I know of that has dealt with the low > temperature charging issue. Its a great product, and the blue tooth > monitoring is an excellent feature too. This is what the other Li+ > batteries should be doing. The big down side is they are currently > limited to 12v. Wish they made a 48v pack. > > https://www.lifebluebattery.com/rv-boat-low-temperature-lithium-ion-batteries/index.html > > Ray Walters > Remote Solar > 303 505-8760 > > On 5/21/21 12:12 PM, Larry wrote: >> My personal opinion is that you should not buy any lithium battery >> that does not provide adequate protection for all modes of operation. >> >> Freezing does not damage the battery; charging a frozen battery may >> damage it quickly. Trickle charging the battery is not the solution. >> >> There are two solutions: provide a heat source to keep the batteries >> above freezing or incorporate a temperature controller to disable the >> charger if the battery is unsafe to charge. >> >> Larry Crutcher >> >> >>> On May 21, 2021, at 8:44 AM, Mark Frye <ma...@berkeleysolar.com> wrote: >>> >>> Folks, >>> >>> If I have a charger that does not have low battery charge cut-off, I >>> can get in trouble if I have a frozen pack and apply a charging voltage. >>> >>> But, if I start with a pack that is above freezing and keep a >>> trickle charge on it, can I keep that pack safe from freezing and damage? >>> >>> Or at some point, as ambient temperature drops, the pack will freeze >>> and be damaged anyway? >>> >>> Thanks, >>> >>> Mark Frye >>> >>> >>> _______________________________________ >> _______________________________________________ >> 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. 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