DIY LIFEPO4 heater

abwillingham

New Member
Joined
Jul 13, 2021
Messages
33
I picked up a 3/16" aluminum plate and one of those RV 12v water tank flat silicon heater pads.

I am trying to figure out the best way to activate it.
I think it will be most needed after a long night of freezing temperatures in the mountains.

I have a few of ideas but I am sure this has long been solved by someone.
I am not sure how much damage occurs using a frozen LifePo4 battery to heat itself.

1) Hook it to my starter battery in the morning until it warms up.
2) Use some kind of a digital themostat device to activate it when it gets too cold, but then the LIFEPo4 battery runs all night at a 3.5A draw. Not the end of the world.
3) Wait for the sun to rise and run it off a solar panel

Either way, I probably need to unsulate my batter box.
 

SolarShed

Solar Enthusiast
Joined
Jul 20, 2021
Messages
76
check out the "Harsh Environment" sub forum here, you may find lots of information there.
 

HRTKD

Boondocker
Joined
Apr 24, 2020
Messages
5,958
Location
Somewhere South of Denver
Here's how I did it.

 
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