[RE-wrenches] LFP Battery Box Heating

[Tyrone Houck]

Low wattage seedling heat mats work well too.




On Tue, Nov 25, 2025, 1:10 PM Dana Orzel via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> I have used digital reptile heaters be fore heated batteries came out.
> Works great about 30 watts each
>
> I used one in between each battery pack
>
>
>
> _________________________________________________________
>
> Dana Orzel                GREAT SOLAR WORKS!
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> ---------- Forwarded message ----------
> From: Jay via RE-wrenches <re-wrenches at lists.re-wrenches.org>
> To: RE-wrenches <re-wrenches at lists.re-wrenches.org>
> Cc: Jay <jay.peltz at gmail.com>
> Bcc:
> Date: Tue, 25 Nov 2025 20:52:33 +0000
> Subject: Re: [RE-wrenches] LFP Battery Box Heating
> Terrarium heaters
> They make flat heaters in all sorts of sizes that you put below the
> battery.
> I use a thermostat to control it.
>
> Inexpensive and works
>
> Jay
>
> On Nov 25, 2025, at 1:06 PM, Steve Higgins via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
> 
> I have heard of success from some using concrete curing blankets...
>
> Something like this..
>
>
> https://www.homedepot.com/p/Powerblanket-Insulated-Heated-Concrete-Curing-Blanket-3-ft-x-4-ft-Fixed-Temp-100-F-Cures-Concrete-2-8x-Faster-in-Cold-Weather-MD0304/305262566?source=shoppingads&locale=en-US&srsltid=AfmBOooWsz9ydnFCQqGmhiwcQwnsiBRsvA0cq7cs26sf8Ktx1P9fc9dXPZM
>
>
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> On Tue, Nov 25, 2025 at 11:59 AM Amanda Potter via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
>> Hello all,
>> I’ve been reading past posts regarding Battery Box Heating & am trying to
>> find a simple way to heat an OSB insulated box for various LFP type
>> batteries.
>>
>> One Battery Company’s tech support said he uses (at his own home) a
>> 110vac incandescent bulb plugged in to a thermostat (inexpensive) that lets
>> him heat between 32 & 50 degrees F.
>>
>> I had somebody suggest the same thing with some Christmas lights.
>> The box & inverter & C.C. are in an un- heated garage on the Canadian
>> border of NY. ( It can, & does get pretty cold up here.)
>>
>> Any suggestions?
>>
>> It’s Off-Grid & the owners want their Starlink & Security Cameras to be
>> on year round.
>>
>> Thanks ahead of time!
>> And, Happy Turkey Day!
>>
>> Amanda Potter
>> Energy Storage Systems
>> NABCEP PVIP
>> Adirondack Battery & Solar, LLC
>> (315) 212-2114
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