> The battery manual very clearly and adamantly says to do this (3 times). It
> is a 22000mAh solar charged power panel. I believe it is so that the
> internal charge monitoring device can calibrate itself. It has a battery
> percentage that shows on the front and the charger is supposed to charge
> normally until 4.2V is reached then trickle the charge off.
If it's for calibration, I guess it makes some sense.
> Let's put it this way: the truth about how to treat LiPo and other
> cells are murky. I can find plenty of people saying you must break
> them in, and plenty saying this does nothing, and plenty saying this
> destroys the battery.
As long as you don't go too low and do it just once, it largely doesn't
do anything, indeed (tho the cells age significantly faster when
deeply-empty or when hot, and they also age a bit faster when full).
As far as the cells are concerned, breaking them in does them no good so
I think the only reason someone might recommend it is for calibration
(i.e. not for the cells themselves).
But the circuitry should re-calibrate itself automatically during the
battery's lifetime (to adapt to the changing cell capacity), so
calibrating it at the beginning shouldn't be that important either.
> I think the truth is somewhere in between. Note that most people
> say a full cycle is needed after long storage of a LiPo cell.
That's probably also for re-calibration since after a long storage the
cell's capacity is probably reduced. But if you don't do that cycle, it
will still work just fine (except the estimate might be a bit
optimistic, tho this will correct itself a you use it).
BTW, to drain your external battery faster, you can make it charge an
internal battery.
Stefan
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