[RE-wrenches] lithium battery question

[Darryl Thayer]

They are like LA batteries and have a cycle count affect lifetime and like
LA batteries the life cycle depend upon DOD per cycle. They also have a
calendar life.  It is generally accepted that LIFE batteries have 5000 deep
cycles and 10,000 equivalent cycles if they are shallow, slow discharge and
slow charge.   In a LA battery the discharge state is about 1.8 x
thicking of the plate.  The LIFE  plates thicken about 4%?  so they do have
a mechanically determined cycle life.   AGM pure lead plates in Outback and
Kilovault have a cycle life of 3000 equivalent cycles if the cycles are
shallow.  (meaning 50%  DOD, 6000 times)    The NCO type high energy
density batteries have a shorter cycle life of about 1500 cycles, however
Jeff Dahm has additives in Some Tesla batteries that extend this, however,
you can not buy these batteries and why would you want to unless you are
doing an electric car?

On Mon, Aug 24, 2020 at 5:52 PM jay <jay.peltz at gmail.com> wrote:

>
> Dear lithium experts
>
> Do lithium LFP or NMC batteries have a break in period ( a certain number
> of cycles or any other specific parameters) to have full capacity?
>
> Thx
>
> jay
>
> peltz power
>
>
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