Pet heater have worked for me, I air gap a sealed heater box under the battery, thermostat inside the top of the battery. It's slow and low power but does the trick Fun times
On Wed, Feb 8, 2023, 3:05 PM Ray Walters via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > Hi All; > > I have a fresh Fortress Evault installation with a Solark inverter. The > batteries are indoors in the center of the house, but the customer is > not there full time, so the battery is unfortunately going below > freezing. What are the best options for setting up a heating system for > the E Vault? > > Here are ideas that I have not tried, but am considering: > 1) add a 240 v, 1000 w baseboard heater in the room near the battery > that is wired to only run off the generator. Run the generator until > the heat comes up, and then hopefully after 30 minutes, the battery > would begin accepting a charge. > > 2) Add an 120 vac heating blanket under the evault that would be wired > to a thermostat, but also have a relay control from the PV system, so > that the heater would only operate when the sun was out, and the battery > was below 50F. I don't quite know how to set this up with the Solark's > load controls. > > I've considered some DC options, but they don't make much sense, since > the inverter has to be on to charge from PV anyway. > > The long term plan is for the client to finish the insulation, and sheet > rock, and add a gas wall heater in there as needed. > > Thanks, > > Ray Walters > Remote Solar > in the Colorado mountain cold..... > > _______________________________________________ > 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 > >
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