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Goodenough's battery that increases capacity over time


Well-Known Member
Mar 6, 2013
San Diego


Well-Known Member
Mar 14, 2013
Unless I'm doing something stupid (possible, I was up late and haven't had much coffee yet), the Panasonic NCR18650G spec sheet lists the 3300mAh cell as being 48 grams. My math wants to say that's 68.75 mAh/g

Those cells are believed to be in the ballpark of Tesla's cells specs.


Well-Known Member
May 3, 2017
Random comments from abstract...

... was charged to 5 V versus lithium with a charge/discharge cycle life of over 23,000 cycles at a rate of 153 mA·g–1 of active material.
Note: the rate is relative to active material, not total cell mass. Is this is the baseline current tech?

A larger positive electrode cell with 329 cycles had a capacity of 585 mAh·g–1 at a cutoff of 2.5 V and a current of 23 mA·g–1 of the active material; the capacity rose with cycle number over the 329 cycles tested during 13 consecutive months.
High capacity at low rate, deep discharge. Again relative to active material.

Another cell had a discharge voltage from 4.5 to 3.7 V over 316 cycles at a rate of 46 mA·g–1 of active material.

Not sure of significance of this test...

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