Expectations for the iPad 3 are that it will be even more powerful than the iPad 2, with a stunning new iPhone 4-style Retina display. Will this have an effect on the iPad’s renowned battery life? How long can we expect the iPad 3 to last on a single charge?
Slimming down
Apple’s iPad 2 made a number of improvements to the original iPad format, with a more powerful processor and slimmer form factor. It achieved all this while maintaining the original device’s impressive 10 hour battery life.
You might have expected Apple to achieve such parity on a much more powerful unit by upping the size of the battery unit, but the startling fact is the iPad 2 battery( Hp 530 Batteries, Hp 510 Battery, Mitac bp-8050 Battery) is 59 per cent smaller than the iPad equivalent.
IHS iSuppli carried out a teardown of the iPad 2 to establish how Apple had made it so slim. The main reason cited was the aforementioned reduction in battery size, which the tech researcher puts down to “a major shift” in battery design. It explains that “Apple moved from two thicker cells to three thinner ones, flattening out the entire battery structure.”
In addition to this, Apple has patented a method for packing in more active material into its batteries, boosting durability without increasing the physical size. This all goes to show that Apple is investing as much attention into battery tech as it is screen or processor tech. Could we see the pattern continue in the iPad 3 with an even more efficient four-cell battery?
Unique demands
As we’ve discussed previously, the common consensus among experts is that the iPad 3 will boast much improved screen technology that will feature a clearer and sharper display. To put it bluntly, it’ll be a 9.7-inch Retina display. This might suggest to you that any advantage gained by a superior battery will be lost pumping out those extra pixels, but that’s not necessarily the case.
Screen tech site DisplayMate carried out a test that compared the iPhone 4′s Retina display with the lower res screens of the Samsung Galaxy S, Motorola Droid, iPhone 3GS and Google Nexus One. It found that the iPhone 4′s screen “is the most power efficient of the displays,” which backs up Apple‘s claims that the technology is extremely easy on the battery.
The same can be said of Apple’s processor tech. There’s a fair chance the iPad 3′s chipset (let’s call it the A6) will be quad-core, boosting the tablet’s capabilities significantly. This needn’t be the huge battery drain that it suggests though. As we’ve mentioned Hp dv6000 Battery, Hp dv2000 Battery before, the iPad 2′s dual-core A5 manages its power usage much more efficiently than the original iPad’s single-core A4, intelligently adjusting its clock speed (and thus power usage) according to the application.
So how long will it last?
Based on the above hints and the precedent set by Apple’s previous devices, we’d guess that the iPad 3′s battery life will see only modest gains as Apple looks to create a more powerful and even slimmer tablet device. Apple has always been about balance, and it appears to be happy with the iPad and iPad 2′s 10 hour battery life – it will be happy if it can maintain that figure in the face of notable improvements elsewhere.
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