Quote:
Originally Posted by Quoth
It is the total cycles in terms of percentage discharge and charge totalled to full cycles, when discharge is to no less than 1/4 to 1/3rd and full charge is no more than 2/3rds to 3/4. Full discharges and full charges, elapsed time and elevated temperature all shorten life
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So, it seems that 15%→85% suboptimal, 30%→70% would be "more optimal", and 40%→60% possibly even better. But again none of these (see at the bottom), I understand, represents an "official charge cycle".
Interestingly, I see a table at
https://batteryuniversity.com/index....ased_batteries
according to which (reinterpreting for the purpose of a more practical numeric comparison) a 1Ah LiPO4 battery can be charged
-- for its 80% around 900 times which is for 720Ah, or
-- for its 20% around 9000 times which is for 1800Ah.
Charging small amounts can overly double the life of the battery.
From the same page:
important:
«Cycling between 85 and 25 percent ... provides a longer service life than charging to 100 percent and discharging to 50 percent»
Interesting:
«The smallest capacity loss is attained by charging Li-ion to 75 percent and discharging to 65 percent ...»
Funny:
«... This, however, does not fully utilize the battery [← having to recharge every 10% loss]»
Quote:
Originally Posted by mdp
I always interpreted
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Quote:
Originally Posted by ottischwenk
It's very simple
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Quote:
Originally Posted by Quoth
It is
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I find it funny to now read at the same page at batteryuniversity.com
«[...] there are no clearly defined standards of what constitutes a cycle»