|Mar 20, 2010, 02:06 PM||#1|
The iPad battery
I wanted to buy a HyperMac battery for my iPhone and (iPad) and wondered how big the iPad's battery is..
At Apple.com the Tech Spec of the iPad says 25Wh, but since the specs of the HyperMac batterys are in mAH wonder how much those 25Wh are in mAH..
And how much a 1800mAH battery would charge the iPad... (:
|Mar 20, 2010, 02:11 PM||#2|
I would wait till it's released mate to be sure.
iPad 3 4G 64Gb - iPad 2 3G 64Gb - iPad 3G 32Gb - iPhone 2g 8Gb - iPhone 3g 8Gb - iPhone 3gs 16Gb - iPhone 4 32Gb -iPhone 4s 64Gb - MacBook unibody Alu - mac mini i5 2.5Ghz - mac mini 2Ghz
|Mar 20, 2010, 03:40 PM||#3|
Here is the formula to determine mAh:
watt = amp * volt
So for the iPad:
25Wh = amp * volt
Ah = 25Wh / volt
mAh = Ah * 1000
We need to know what the voltage of the iPad battery is. Anyone know?
Last edited by spazer; Mar 20, 2010 at 03:46 PM.
|Mar 20, 2010, 05:13 PM||#5|
Hypermac batteries are 5V packs, so the "Micro" will be about 18Wh. The "mini" is the best bet for a full recharge of an iPad--with room to spare (36Wh).
The nano will get the iPad to about 1/3 charge.
Macs: MBP (2009) 2.66 OS X 10.6.4
iMac 3.06, G5 Dual 2.7, MythTV, G4 Cube
I am not your lawyer; any discussion is purely academic and not legal advice.
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