Maximizing lifetime energy thoughput

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wle
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Maximizing lifetime energy thoughput

If you wanted to maximize the lifetime energy thoughput of your Li-ion cells,
would you charge to 80% every time, or 100%?

The cells last longer (I assume this means before they lose capacity), at 80%.

But you get more in and out, with each charge at 100%.

To come out ahead, they would need to last 25% longer at 80% charge.

Which is it? 80% or 100%?

Show your work Smile

wle

"You never have the wind with you - it's either against you, or you're having a good day."
    Daniel Behrman, "The Man Who Loved Bicycles".
It never gets easy, you just go faster.   
-Greg Lemond.
       ,ø¤º°`°º¤ø¸,ø¤º°`°º¤ø¸,ø¤º°`°º¤ø¸

Bort
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In general charging to 80% and recharging at about 30% will give the most cycles.
But there is much more to this, keeping the temperature cool, not punishing the cells on high charge or discharge rate, storing the cells around 50% when not used for long periods and so forth.

All that said cells are not expensive so some may see no point in babying them, but conversely if you do see the point then you can put in the work and have your cells live a long time.

As for citations for all this, i don’t have any off the top of my head, but you can run what i have said through the google and read through the results.

There was also another thread recently on BLF about this, if anyone remembers the title of it a link would save a lot of repeat keystrokes.

The Journal of Alternative Facts TM

"It is critical that there is a credible academic source for the growing and important discipline of alternative facts. This field of study will just keep winning, and we knew that all the best people would want to be on board. There is a real risk in the world today that people might be getting their information about science from actual scientists"

 

 

 

wle
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True – cells are cheap – but I’m also concerned with Phone Batteries, which are not.

(Though you can not conveniently cut charge off at 80%, that I know of.)

wle

"You never have the wind with you - it's either against you, or you're having a good day."
    Daniel Behrman, "The Man Who Loved Bicycles".
It never gets easy, you just go faster.   
-Greg Lemond.
       ,ø¤º°`°º¤ø¸,ø¤º°`°º¤ø¸,ø¤º°`°º¤ø¸

Lixivium
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I charge my cells on the lowest setting and don’t leave them in hot/cold environments. Otherwise, they don’t get babied. I feel like they’re going to degrade over time either way so no point in worrying.

Bort
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wle wrote:
True – cells are cheap – but I’m also concerned with Phone Batteries, which are not.

(Though you can not conveniently cut charge off at 80%, that I know of.)

wle


If you have Android then get Accubattery. It beeps at 80%.

The Journal of Alternative Facts TM

"It is critical that there is a credible academic source for the growing and important discipline of alternative facts. This field of study will just keep winning, and we knew that all the best people would want to be on board. There is a real risk in the world today that people might be getting their information about science from actual scientists"

 

 

 

Bort
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I made a lot of posts in this thread explaining how batteries work
https://budgetlightforum.com/node/78709

The Journal of Alternative Facts TM

"It is critical that there is a credible academic source for the growing and important discipline of alternative facts. This field of study will just keep winning, and we knew that all the best people would want to be on board. There is a real risk in the world today that people might be getting their information about science from actual scientists"