theoldwizard1 wrote:
pianotuna wrote:
Many battery users are unaware that consumer-grade lithium-ion batteries cannot be charged below 0°C (32°F). Although the pack appears to be charging normally, plating of metallic lithium occurs on the anode during a sub-freezing charge that leads to a permanent degradation in performance and safety.
You are more aware of battery chemistry than I, so hopefully you can answer this question. I am aware if the cod charging issue, but can you store or discharge LiFePO4 batteries below freezing ? How far below ?
Hi,
Yes they can be stored well below freezing. They can be discharged until the threshold of -4 f. Just no efficient way to charge them. Charge rate at -4 f is 0.02 C. Assuming a 100 amp jar, that's 2 amps.
There is one Li that can be charged at -40. It is Lithium Titinate. It costs an arm and a leg and your first born son.
