[puddleglum]

I've been hearing that these cells are the supposed to be the closest thing to a123 cells in a easy to use package. I know Jack is claiming 12C from them. Can anyone explain why the spec sheet on the CALB site says 2C max?

[Ziggythewiz]

That's the continuous rating. I haven't seen a max pulse current, but even with the old ones it was up to 10C.

[EVfun]

That concerns me a bit too. The older SE cells allow a higher continuous rating even with (it seems) more sag. Plus, Jack's test should not be relied upon for real world results for a couple of reasons.

First, he had just charged the cells at 3C and raised the temperature to about 100 degrees Fahrenheit on the outside of the case measured with an infrared thermometer. It is likely it was even warmer inside. Second, it has been common with the cells we are using to find that the smaller the cell the greater the current capability relative to capacity. Large cells might sag to 2.5 volts at 4C while on smaller cells it may require a 6C discharge to get them down to 2.5 volts.