General Question

purephase's avatar

What are the recommended charging habits for the iPhone?

Asked by purephase (749points) March 20th, 2008 from iPhone

Does it make a difference when you charge the phone? As in, should I let the battery run down to the red zone before recharging? Also, once the battery is fully charged, should it be removed from the dock? I have always understood this to be the best way but I have heard different regarding the iPhone. Thanks for any input.

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8 Answers

squirbel's avatar

I’ll quote some other guy:

As an electrical engineer, I’ll tell you that Li-ion batteries do have a ‘sweet-spot’ that extends their life. If you discharge the battery to 35–38% charge remaining and then charge it back up to full, the battery will operate more efficiently over time, and last longer.

purephase's avatar

Many thanks!

squirbel's avatar

Not a prob, I just learned something myself :)

I’ve been fully discharging mine…

kevbo's avatar

The Apple Web site says to fully discharge and charge it once per month to ensure calibration, but I’d also believe the above.

Brunty's avatar

My iPhone’s never reached below 10% battery, I use it during day and put in dock to charge overnight, figured while it’s sitting there I’ll charge it, in case I don’t get time to charge and have to use it for longer next time.
Always done that with all my phones.

anthony81212's avatar

How do you tell when its 35–38% on an iPod Touch?

Shake's avatar

Yes. What you should do is completely use up the battery once a month. This calibrates the battery. Just like how most do on laptops. Completely drain, Fully charge without using and leave it in for a few extra hours.

Shake's avatar

You should also do this when you first get the iPhone. I can’t explain how happy I am with my battery.

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