Apple’s new iPad is almost all battery with 42.5-watt-hours capacity

“During the new iPad’s unveiling yesterday, Phil Schiller noted many of the device’s upgrades — the new Retina display, quad-core graphics engine, and LTE networking — consume a lot of battery life,” Jordan Kahn reports for 9to5Mac. “Schiller then announced the new iPad would have the same 10-hour battery life over Wi-Fi (or 9 hours over 4G) as the iPad 2.”

“A few things not included in the presentation: The new battery is a 42.5-watt-hour rechargeable lithium-polymer battery with 70 percent more capacity compared to the iPad 2′s 25-watt-hour battery,” Kahn reports. “The new iPad battery likely will cover almost the entire surface area of the device.”

Kahn reports, “One unanswered question is whether the new iPad’s 70 percent larger battery will take longer to charge.”

Read more in the full article here.

[Thanks to MacDailyNews Reader “Dan K.” for the heads up.]


  1. So the new iPad is slightly thicker and heavier compared to iPad 2, probably because of the need for a better battery. But the difference is small enough to be unnoticeable by most people, and since most “The new iPad” customers are new to iPad, they won’t really have a basis for comparison.

  2. I wonder if the battery is the same for those of us who have ordered the WiFi only versions? If so, then we should get slightly longer run time between charges, as we won’t have the power hungry LTE.

    I have a MiFi, so I will continue to use that when I do need connectivity and am not near a WiFi hotspot (and will be upgrading it to an LTE model soon).

    1. The LTE is only part of the issue. The smallest part, actually. Doubling the pixels doubled the power draw of the screen, and the screen, by far, was already the biggest power drain on the device.

      Doubling the graphics cores of the CPU likely also increased power consumption, though unlike the screen, I can’t know for sure.

      Wi-Fi models should get 10 hours, same as the LTE models when the LTE is not active. When the LTE (or 4G, or 3G) is used for connectivity, the battery life drops to 9 hours. Same as the last model. That means that while the 4G chipset does take more juice, the proportion of additional power is roughly the same… 10% more than wifi only.

    1. What do you want to bet Apple is scouring the globe as we speak looking to hire people with this knowledge and skill?

      I’m frankly shocked we haven’t heard of a major acquisition by Apple in this area yet. The iPod came out over 10 years ago and everything they have done since has been related to battery and portability constraints.

    2. Jubei, that is why NASA and physicists need our support. The Large Hadron Collider and recently closed Fermilab are extremely close to discovering how energy forms matter (Higgs boson). If this can be controlled (think Star Trek transporter) and using E=mc^2, the currently size iPad batteries could power it for years, probably its whole life. The same would be true with electric car batteries. A dish washer sized energy-matter converter could supply enough power for you and your home for your entire life. Scientists are getting very close.

      1. Maybe I’m wrong here, but I believe the boson is tied to gravity, not matter created by energy, but gravity as a result of this mysterious particle. I presumed the boson was as much a particle of matter more than energy, although I can see it being referred to as “energy” since it may more of an attracting rather than binding material. I have to admit here mathematics is magic to me…

    1. What makes the iPad so amazing is all they were able to cram in there with such long uptime at such a small size given the constraints of battery technology.

  3. One big battery. Nice.

    With Processors shrinking so small – 100s of millions transistors on a single die; why can they not place the entire computer there?

    One chip integrating the graphics cards, memory, the processor and embedded system – leaving a battery – storage and connectors only.

      1. Hmm, circuit boards are essentially loops “rings” if you will, they are soldered down to a sheet of plastic that is inside a case that keeps light out… Never thought of it that way.

  4. This is part of Apple’s genius. The reason they get the battery life they do is due to their battery technology, integrated custom A5X chip, and their software. I don’t see any other electronics manufacturer being able to come close to building a tablet with a simar form factor

  5. Sorry… accidentally hit the publish button while typing.

    This is part of Apple’s genius. The reason they get the battery life they do is due to their battery technology, integrated custom A5X chip, and their software. I don’t see any other electronics manufacturer being able to come close to building a tablet with a similar resolution, 4G, and form factor with the battery life of the new iPad.

    1. I’m willing to bet Apple has the supply on the iPad screens locked up for the next 12-18 months. Even if someone else wanted to make a similar tablet they won’t be able to.

      I expect Apple to soon be large enough to completely buy up numerous components and shut the doors on various product categories for competitors.

  6. What I find funny, is on one of the iPad 3 vs Asus Transformer Prime articles, people are already posting that the iPad screen is “overkill, no one really needs that and big deal”.
    That the iPad is still only at 10 hours of battery life when the Asus is 12 hours.
    They won’t admit that 4 times more pixels “might” be part of the power issue.

    The Droid fans prove once again that they will bitch about anything.

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