KeepingItLight
Flashlight Enthusiast
Ok, well it's kind of speculation then. ... <snip>
Right.
It requires assumption or speculation to say that any of the lines on the Panasonic chart represents the maximum continuous discharge current. Panasonic makes no such claim, either on the chart, or anywhere else in its datasheet.
I have wondered why Panasonic does not post an absolute limit, or number, to describe maximum discharge current. I do not know its reasons. Part of it may style. After all, any number you choose is somewhat arbitrary.
Consider, for instance, the NCR18650GA ("GA"). How do you think Sanyo arrived at its 10-amp rating? My understanding is that it chose that value after analyzing the discharge tests it made. It was chosen as a reasonable compromise between performance and voltage sag. I don't believe there is any magic formula that output exactly 10 amps. Sanyo simply chose that number.
Perhaps Panasonic would rather let the graphs speak for themselves. Rather than setting an arbitrary limit, it wants engineers to make their own analyses. It is also possible that Panasonic's larger customers have access to technical information that Panasonic does not publish on the Internet.
Speaking of the "GA," are you comfortable saying it has a 10-amp continuous-discharge specification? If so, you should know that it comes from a Sanyo—rather than a Panasonic—datasheet. The Sanyo document has the same format and "tentative" marking as the one it released for the "B." If you are happy with the GA's rating, you should probably be willing to accept the rating for the B, as well.
They come from the same source.