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If your dream has always been to own a laptop that can easily be converted into a top-notch, no-compromise slate device, then Dell's XPS 12 convertible Ultrabook with battery such as Dell G555N battery, Dell J415N battery, Dell Inspiron 1440 battery, Dell Inspiron 1210 battery, Dell F805H battery, Dell P776K battery, Dell K903K battery, Dell Studio 1440 battery, Dell Studio 1745 battery, Dell Studio S1749 battery, Dell 312-0196 battery, Dell Studio 1735 battery will make it come true. It's one of the most impressive Windows 8-based machines we've seen so far in terms of hardware design, and we love the way that it can be turned from a conventional clamshell notebook into a sleek and highly-usable tablet. However, there are still some teething problems with Windows 8 on this unit, in particular with the wireless networking service, which, at the moment, can be very annoying.
A 12.5-inch form factor makes the Dell XPS 12 convertible notebook a little smaller than most of the Ultrabooks we've seen to date (which are 13.3 inches), and this smaller size is needed in order to make the unit as light and as comfortable as possible to use as a tablet. Because the base and the screen remain permanently attached, you don't want something too heavy to hold in tablet mode.
That said, at 1.5kg, the XPS 12 convertible is undoubtedly heavier than a stand-alone tablet in which the screen and processing power are all in the same unit, and it also feels heftier than a regular 13.3in Ultrabook. In the Dell XPS 12, the screen is separate to the processing power, which is located in the base, and it contains quite a lot of processing power for a tablet — after all, it is a no-holds-barred, fully-fledged Windows 8-based system that can be used for regular office work as well, so you have to take that into account when judging the weight.
The battery life of the XPS 12 convertible is adequate, but perhaps not long enough for such a portable unit. Our typical rundown test, in which we disable power management, enable Wi-Fi, maximise screen brightness and loop an Xvid-encoded video lasted 3hr 34min. We're disappointed it didn't do more, but the screen is quite bright and the battery space in the chassis is quite limited, so it's understandable.
When we used the XPS 12 in more typical, mixed-use scenarios, with the brightness set to 50 per cent and with the Balanced power profile enabled, the laptop lasted four-and-a-half hours and five hours in those tests. In the second of those tests, we kept the unit strictly in tablet mode.
Our usage model consisted primarily of Web browsing, with some YouTube sessions, photo viewing, music listening and game playing (using the games from the Windows store) thrown in for good measure. It shows that you can get a decent time out of this unit for everyday tasks, but how much you get will vary depending on your workload.
The battery takes about three hours to fully charge using its very small, 45W adapter. After one hour, the battery life will be at around 30 per cent.
There's no doubt some tweaks need to be made to the XPS 12 convertible's system in order to provide a smoother user experience under Windows 8, but the physical unit itself is great. It's a lot of fun to use, its screen is excellent, and it works very well as a tablet. The inclusion of a Core i7 CPU means it's one of the quickest tablet devices on the Australian market, too, and you can use it for serious work as a conventional notebook, in addition to tablet-centric tasks. Basically, you're getting a versatile system that's practical and well made, but it needs some software updates to iron out a few wrinkles before it will provide a completely pain-free user experience.
If you want to learn a bit about Windows 8 before purchasing a Windows 8-based convertible Ultrabook such as this one, check out our beginner's guide to Windows 8, which shows you how to get around the Start screen and much more.