DIY Battery Warmer using Plant-Grower Pads and other....

[farmhand]

For what it's worth (and it's pretty poor), here is a battery warmer I made for the LifePO4's for central Ohio, in an outhouse.

(2) 10x20 17v 120v plant warmer mats (no foam padding).
(1) Amazon temp controller that we also have in the coop.
3/4" foam board, 1" foam board, a full roll of foil tape.

The wood battery shelf has 1" foam under it, then the shelf 2x12, then 2 layers of pole-building bubble

Kinda made a wire mess.. :/
wrap, then warmer mats, then batteries.
2 layers of foam board all the way around.
Temp controller set for 40.
Charge & Temp Controller probes are on TOP of the batteries.

Temps here dip to -10 overnight (the worse ever was 5 days never reaching 10degrees.

 

[farmhand]

The red loop wire is so I can check the amps to ensure both are working at times.

 

[AmpD]

Usb toilet seat warmer and your set! *jk

Ty for posting I’ve been considering much the same.

 

[DAS TRD]

For what it's worth (and it's pretty poor), here is a battery warmer I made for the LifePO4's for central Ohio, in an outhouse.

(2) 10x20 17v 120v plant warmer mats (no foam padding).
(1) Amazon temp controller that we also have in the coop.
3/4" foam board, 1" foam board, a full roll of foil tape.

The wood battery shelf has 1" foam under it, then the shelf 2x12, then 2 layers of pole-building bubble

Kinda made a wire mess.. :/
View attachment 168539View attachment 168540View attachment 168541View attachment 168542 wrap, then warmer mats, then batteries.
2 layers of foam board all the way around.
Temp controller set for 40.
Charge & Temp Controller probes are on TOP of the batteries.

Temps here dip to -10 overnight (the worse ever was 5 days never reaching 10degrees.

View attachment 168538

I'm inspired, for my small truck system I'm thinking 12v heat pads for my Battle Born...in central Alberta where I live get down to -40°C/F or even colder for a week or two at the time...

 

[SeaGal]

Is the loo roll there just in case you happen to be checking the batteries and discover a major problem with them?

 

[farmhand]

Is the loo roll there just in case you happen to be checking the batteries and discover a major problem with them?

It's still an outhouse lol

The system has warmed two mornings now and nothing blew up so that's good.