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iPhone batteries v. laptop batteries

Alexander Hoffman (apparently) - 03:13am Jul 30, 2007 PST
via email

Here a question for the crowd:

Why/how are iPhone batteries so different from laptop batteries?

That is, we all know that Apple is saying that iPhone batteries will
still have about 80% of their original capacity after 300-400 charge
cycles, right?

That's not even close to true for laptop batteries. After 300-400
charge cycles, laptop batteries are down to 50%, at best.

Why is that? Why can't they make such a robust laptop battery?

--
=Alex Hoffman
Leadership, Policy & Politics
Teachers College, Columbia University

Mark as Read

Conrad Hirano (apparently) - Jul 31, 2007 3:37 am (#1 Total: 1)

via email

Posts: 66

Re: iPhone batteries v. laptop batteries

On Jul 30, 2007, at 3:13 AM, Alexander Hoffman wrote:

> Why/how are iPhone batteries so different from laptop batteries?
>
> That is, we all know that Apple is saying that iPhone batteries will
> still have about 80% of their original capacity after 300-400 charge
> cycles, right?
>
> That's not even close to true for laptop batteries. After 300-400
> charge cycles, laptop batteries are down to 50%, at best.
>
> Why is that? Why can't they make such a robust laptop battery?

My guess would be it's because laptops tend to run hotter than cell
phones, and elevated temperatures tend to reduce battery longevity.

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iPhone batteries v. laptop batteries

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