Wanting to build battery heater for my 280 ah LiFePO4

[Nomad666]

I am building making a heater system and would like to know what the best temp range would be best for my LiFePO4 as I am in an area that winter temps can go as low as -40 what would be a good temperature range to keep them at I was thinking 5C to 15C or should it be set higher?

 

[HRTKD]

I have my thermostats set for 35° F to 45° F. The BMS low temp cutoff is 32° F. I have the BMS and thermostat temperature probes mounted side by side on the top of the battery so they are both reading the same temperature.

More details here:

LiFePO4 Battery Warmer Install

This is my install of a custom set of battery warmers from Ultra Heat. I had contacted them through email asking about a warming profile for LiFePO4 batteries. They responded with a design to my specifications, including warming pads that fit my batteries exactly. While I initiated the...

diysolarforum.com

 

[Diysolar123]

I am building making a heater system and would like to know what the best temp range would be best for my LiFePO4 as I am in an area that winter temps can go as low as -40 what would be a good temperature range to keep them at I was thinking 5C to 15C or should it be set higher?

well, first critical bit of advice is, thats tooo cold so you need move!