This is what Tesla is recommending for the LFP based model 3 and model Y
versions. 100% charge. VS the 80% for the other chemistries. Tesla
is also going more in on LFP solutions and the latest investor
presentation said their proprietary model "breakthrough" battery is no
longer an emphasis because third party batteries are getting cheaper
than they can make.
On 4/26/24 1:06 PM, TJ Trout wrote:
Storing a fully charged lithium iron phosphate (LiFePO4) battery has a
minimal impact on its lifespan. In fact, it's recommended to fully
charge LiFePO4 batteries before storing them for long periods of time.
These batteries have a low self-discharge rate, typically losing 2% of
their charge per month. However, fully charged lithium-ion batteries
can be dangerous if left unused for long periods of time.
On Fri, Apr 26, 2024 at 12:43 PM Forrest Christian (List Account)
<[email protected]> wrote:
On Fri, Apr 26, 2024, 1:02 PM Ken Hohhof <[email protected]> wrote:
And I'm still using AGM batteries while all the cool kids are
using LiFePO4 with BCMs, so definitely don't listen to me.
The more I learn about lithium batteries, the more I feel that
lithium has relatively few advantages for standby applications.
My most recent knowledge acquisition is the fact that if you want
to shorten the life of a lithium battery the best way to do so is
to keep it fully charged. The higher the average state of
charge, the shorter the life of the battery, although admitted
there isn't much change in lifetime between about 20% and 80%.
But keeping them at 100% isn't great.
If you want to store a lithium battery without charging, it's
best to drop the charge below 80% then store.
In a standby application you really want to keep a battery at 100%
which shortens it's life greatly. A better choice would be to
keep it at 80% max but then you have other issues, not to mention
the fact you now have to buy a bigger battery array.
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Thank you,
TJ Trout
Volt Broadband
209.480.3122 Cell
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