[RE-wrenches] Fortress Battery Heater

[Chris Schaefer]

Ray,

I'd suggest reaching out to the Fortress techie's as they just introduced a
heater product for their enclosure products. While I don't believe they
have a unit specif to the eVault but you should be able to make it work.

Christopher

On Wed, Feb 8, 2023 at 6:43 PM Jerry Shafer via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> 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 at 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.....
>>
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