Anyone try these as battery heaters?

[Aakelley]

Looking for a simple 24v based solution for keeping my two 24v EG4 LifePO4 batteries over the winter in my skoolie.

Anyone try these? Thinking of two each attached to the bottom of each of the batteries run out of a thermostat that comes on at 35 and off at 45.

4 PCS Film Heater Plate Adhesive Pad, Icstation PI Heating Elements Film 24V 30W Strip Heater Adhesive Polyimide Heater Plate 45mmx100mm https://a.co/d/h2poUOJ

 

[12VoltInstalls]

Huh. No experience with them but they’re Inexpensive and they have 12V parts, too.
Thanks for that.

30W/24V is likely decent but I’m not sure a single 12V version at 13W would keep a battery warm enough without insulating the batteries.
Then again, after an hour or so my cell booster aluminium case gets warm after an hour or so and that’s only ~5W