Hi Jay, Within the next couple of weeks LiFeBlue Battery will be shipping the new Low temperature models. They have a heater built in and if the cells are below 32°F, charge current is diverted to heat the cells above freezing before transferring full charge current. All handled by the internal BMS.
You can build a box and add a silicone type heater with a temp controller. I’ve bought items like that on eBay for about $25. See photo. Larry Crutcher Starlight Solar Power Systems On May 16, 2019, at 4:41 PM, jay <jay.pe...@gmail.com> wrote: HI All, I”m wondering if anyone has suggestions about how to charge a Lithium battery in RV or in this case Polarius in sub zero temps. Are there batteries that have heaters built in, or is it still a custom design issue to build a heating system? ( insulation and heaters) Thanks, jay peltz power
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