Battery Question

Grit dog wrote:

Or to put it another way, they still don’t charge in the cold. Doesn’t matter if it’s -100 if you keep them warm. Then they’re not in the cold.

Thank you for finally using your words!

I hate it when people post statments like they dont charge in the cold. if you are camping and using your batteries you have obviously made it so the battery is kept warm, no matter what the weather is like outside. so they will act just like a normal battery and you can forget about them, which people seam to forget. the beauty about LiFePo4 is they are a zero off gass any position battery so you can tuck them anywhere. and if you make your own you can make them a wide viriaty of shape with out hurting preformance. this enables you to put them in places you couldnt put a normal battery.

I think part of the issue has been becuse they do have limit of cold charging, it was always asumed they have a hrd limit on cold dischare and if that was the case then yes Pianotuna would be right for extreem cold camping SIO2 were better, even though they are more expensive now.. but now that we have discovered that they will dischardw at much lower temps, the playing field has shifted back in favor of the LiFePO4. in fact at -30 they have less of a capacity restriction than SIO2 (60% capacity for SIO2 &0% capacity for LiFePO4. granted this will only be an issue for thr LFP when first starting a heating unit to warm up the batteries then they will be back at 100% capacity, the SIO2 sitting outside will still only have 60% capacity)

so as long as you can mount the LFP batteries where they will be kept warm for charging purposes, then at a lot less weight, and much smaller for the same usable AH, and cheeper. its a no brainer

Steve