Lipo Battery Standards, open discussion

[johnrobholmes]

I would be a bit more liberal with temperatures, around 140*f is my max temp for lipo. Of course as temp goes up R goes down. That is really what is missing in most discharge recommendations, and it may be why many cells do not seem to live up to specs. Testing a cell at 80*f and 120*f makes a HUGE difference in voltage under load. It really would be as easy as stating a few temps and the correlating bursts that the pack can handle without voltage dropout.

I like your idea for burst rating. I have come across 10 sec burst, 60 sec rest from a few factories, and that seems to be the same numbers I get when I talk to importers. The important point is that the method of determining burst is rarely disclosed by the retailer. I know of none that do right now.


Pack cooling will also play a larger roll. If airflow is used to cool a pack then the C ratings may be inflated since the temperature may not hit the cutoff.