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Initial Litium deactivation is 30 % compared to 9 % with slow formation loading.



How much capacity is lost as a result of this?


Lithium deactivation is inversely proportional to capacity. We could just add extra capacity to make up for it, though. From there, the battery would maintain capacity for a longer time than before.


> We could just add extra capacity to make up for it, though.

At naive face value, "just" adding an extra 30% capacity to offset expected lithium deactivation implies proportional increases in material COGS and package mass/volume, all other factors being equal.

Unless (a) a manufacturer is optimizing for throughput; (b) production is constrained at this initial charge stage; and (c) supply substantially lags demand; this strikes me as a non-starter in most of the consumer space.


Extra 21% capacity. Current practice still burns 9%. Lithium batteries have become very cheap, and I would pay a markup for a 50% longer battery life, assuming it didn't (a) further normalize non-replaceable batteries in consumer electronics or (b) lead to even worse conditions for the quasi-slaves currently mining lithium. Unfortunately, I doubt either of those will hold.


> Extra 21% capacity. Current practice still burns 9%.

On a normalized basis, if current practice yields 91% finished capacity (i.e. 9% deactivation loss), and the new proposed process is expected to yield 70% finished capacity (i.e. 30% deactivation loss), then the question is how much initial material must the new proposed process start with to end with the equivalent finished capacity as the current practice?

  FinCap = InitCap * (1 - DeactivationRate)

                                        0.91
    0.91 = InitCap * 0.70 --> InitCap = ---- = 1.30
                                        0.70


Good point, I didn't think that through. Thanks for the correction.


Isn't there how much fire risk from charging a _ battery at higher than spec currents?


It's just the single inital charging that has to be at high current.


So for SAFETY then there also shouldn't there be battery fire containment [vessels] for the production manufacturing process?


Absolutely, but I hope there already are measures taken to prevent and contain battery fires during manufacturing.




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