[john61ct]

Well there is no black and white, but you really want a warmish temperature for going over 0.3C

At that very cold temp I'd stick to 0.1C, but really, better to warm them up.

I'd want at least 25°C for going over 0.5C, and would not go over 0.8C below 30°C

There really should not be much internally generated rise in temperature, that's a symptom of losing lifecycles.

That's all to maximize longevity, assuming other care parameters are conducive as well.

If you're stressing the packs with very high voltage charging, high discharge rates very deep average DoD% etc then never mind they'll lose so many cycles anyway this one factor will get lost in the noise.

 

[voganni]

Well there is no black and white, but you really want a warmish temperature for going over 0.3C

At that very cold temp I'd stick to 0.1C, but really, better to warm them up.

I'd want at least 25°C for going over 0.5C, and would not go over 0.8C below 30°C

There really should not be much internally generated rise in temperature, that's a symptom of losing lifecycles.

That's all to maximize longevity, assuming other care parameters are conducive as well.

If you're stressing the packs with very high voltage charging, high discharge rates very deep average DoD% etc then never mind they'll lose so many cycles anyway this one factor will get lost in the noise.

Thanks for the reply! I want to preserve this pack and use it conservatively. The truck lives in a moderately warm shop. What is the C rate for volt cells? Now if I could figure out how to get the cooling pump running!

 

[swoozle]

Volt nominal cell capacity (C) is ~45Ah.