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The New iPad Has a Really Massive Battery

When Apple unveiled the new iPad (which is now designated as "third gen" from Apple's site), it said boasted that it featured battery life that was no different from that of the iPad 2.

Having something the same as the previous generation isn't typically something to brag about, but in this case, it is. The battery of the new iPad is 42.5 Wh, which is literally huge. The one in the iPad is just 25 Wh in comparison, making the new one 70 percent greater in capacity.

To put that in perspective, that's more juice than in the 11-inch MacBook Air and nearly as big as the battery in today's 13-inch MacBook Air at 50 Wh.

Obviously LTE brings a lot more battery drain, as evidenced by 4G smartphones. The real need for all that extra power is likely the upgraded screen with its 3.1 million pixels.

The new iPad may be thicker and heavier than the iPad 2, but all that heft and bulk (which is actually quite minimal) has gone to all the places where it counts.

We can't wait to see the teardowns to show us how much of the entire device is just battery.

Read more from @MarcusYam on Twitter.

  • johnners2981
    I'm being bombarded with tablet news here, I still don't want one
    Reply
  • ha1o2surfer
    one important thing to note is the iPad battery isn't supplying 12volts (I don't think it is, the old iPads battery was 3.8) like the MacBook Air battery so it is still quite small in comparison. In general, 3.5Volt Battery at 40Wh has way less capacity than a 12volt battery at 40Wh
    Reply
  • scook9
    ha1o2surferone important thing to note is the iPad battery isn't supplying 12volts (I don't think it is, the old iPads battery was 3.8) like the MacBook Air battery so it is still quite small in comparison. In general, 3.5Volt Battery at 40Wh has way less capacity than a 12volt battery at 40Wh100% wrong.....that is why they reported the battery capacity in Wh and not mAh.....

    w=A*V

    The lower voltage just means you will get a longer charge out of a same capacity battery (again, see above equation)
    Reply
  • watcha
    scook9100% wrong.....that is why they reported the battery capacity in Wh and not mAh.....w=A*VThe lower voltage just means you will get a longer charge out of a same capacity battery (again, see above equation)
    Indeed. Ha1o2surfer, the 'Wh' is a measure of capacity, so you can directly compare the numbers.
    Reply
  • freggo
    ha1o2surferone important thing to note is the iPad battery isn't supplying 12volts (I don't think it is, the old iPads battery was 3.8) like the MacBook Air battery so it is still quite small in comparison. In general, 3.5Volt Battery at 40Wh has way less capacity than a 12volt battery at 40Wh

    Ahem, I am not an electrician, but 40Wh is 40Wh.
    If you drain it at 12V you get fewer Amps than draining it in the same time frame at 3.5V.

    Any electrical engineers here that can clarify this ?
    Reply
  • jamie_1318
    aoneoneyou dumbass, Wh is Watt HOURS. it has nothing to do with your stupid equation w=A*V.It is equal to power times HOURS. NOT amps and volts you retard. god, how do dumbasses like you survive life?
    Oh god. How old are you?
    watt=Volt x Amp
    watt hour= watt/hour
    Reply
  • nforce4max
    So they made it lager to boost battery life yet taking the risk that this Lithium polymer battery just just puff up and catch fire isn't the best thing but for most just more battery life.

    Reply
  • freggo
    What we need is an 'external' Battery port.
    The port should be the same on all devices so an IDENTICAL external Battery can be used if the juice runs out. And as they are all IDENTICAL you could ask ANYONE to lend you his/her external backup in a squeeze.

    Of course each device's internals of the battery port would then have to be in charge (pun intended) of converting the supplied power to the needed voltages and currents.
    Reply
  • ha1o2surfer
    I was just thinking that the less voltage a battery is designed at the more amps/watts it has to draw at any given watt. A laptop drawing 10 watts at 12 volts will draw a lot more watts if it has to run at 3.6 volts. it's a good thing I'm not an electrician haha
    Reply
  • icemunk
    aoneoneyou dumbass, Wh is Watt HOURS. it has nothing to do with your stupid equation w=A*V.It is equal to power times HOURS. NOT amps and volts you retard. god, how do dumbasses like you survive life?
    um... I'm guessing you're new to physics and math. Watts=Amps X Volts. It's quite simple An hour is 60 minutes in case you need that help.
    Reply