New iPad's battery

Batteries, Chargers, and Battery Management Systems.
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Allex   1 GW

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New iPad's battery

Post by Allex » Mar 09 2012 3:47pm

Pretty impressive huh, how do you think they did it?
"Apple has nearly doubled the capacity of the battery, taking it from 25Wh to a massive 42Wh. Measured in milliamps this boosts the battery from 6944 mAh to a monstrous 11,666 mAh. The obvious way to boost the battery’s capacity would be to double the battery size, but given that the new iPad is only fractionally thicker and heavier than the iPad 2, it’s highly unlikely that the battery is significantly bigger than the one in the iPad 2."

http://www.zdnet.com/blog/hardware/new- ... tery/18985

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CamLight   10 kW

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Re: New iPad's battery

Post by CamLight » Mar 10 2012 12:23am

Using newer-generation cells (with higher power density), I can see the additional capacity being achievable.
Add on the fact that the new cells are thicker, and capacity can really increase. It doesn't take much of an increase in thickness to increase the capacity of an already flat cell by a whole lot more.

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Sacman   10 kW

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Re: New iPad's battery

Post by Sacman » Mar 10 2012 12:39am

The higher capacity battery was needed to power the new higher resolution Retina display and still maintain a run-time of 10 hours (just like on the iPad2). But alas the combined larger battery and Retina display makes the iPad3 just slightly thicker than the iPad2.

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