Lifepo4 cold temp cut off 23F or 32F?
Reading on LFP cold cut off I see Expert Power has 23F as there cut off on there batteries and I thought it was 32F? Expert Power wrote: Question: Do these have low temperature protection. Will t...
Forum Discussion
noteven wrote:
Some battery makers are now building self heating LiFeO4 batteries.
No they don’t use their own amp hours to heat. The batteries can deliver energy down to -20C battery temp.
They use energy from the charging source to warm the cells. Then they begin to charge.
Lithium batteries can accept charge at very high rates.
This is why a small generator or engine alternator charging is probably step one in a lithium system then do the solar spend to round out the system, especially if you camp in winter, forest, shade, or rainy lands.
I wonder how long the heater would take to warm the battery bank at -37 c?
Best possible charge rate for best cycle life is 0.2 c. A 0.5c works well, too. Yes, you can charge faster--but with a trade off in cycle life.
Battleborn batteries have a heated version--and it DOES draw from the battery to keep warm unless there is external power available.
