If you come from a Blackberry point of view, the idea of a smartphone with a sealed battery seems very silly, but manufacturers like Nokia and Apple work on the basis that your phone should be as slim/light as possible and locked in wherever it can be. Which might look nice, but means ‘no charger, no charge'. KitGuru investigates the latest release by Luxa2.

Once upon a time, Thermaltake was a chassis and cooler company only.

At some point, the CEO Kenny Lin realised that he had a problem on his hands: If you make a really good cooler, case etc, then people don't need to buy anything else from you for several years. And so Tt eSports was born – driven along by every gamers need to have a mouse, keyboard etc that's just slightly better than their competitor – and these products wear out – creating an opportunity for customers to buy once a year or even more frequently.

So with manufacturing running smoothly for tradition and gaming markets, this production giant now turned its attention to the much more complicated world of consumer electronics.

Today sees the launch of the P3 from Luxa2.

Weighing in at just 70 grams (2 ounces), this 2,500 mAh power bank can store enough juice to effectively double the charge life span of an iPhone 5. In fact, under perfect circumstances, it can offer just OVER a second charge – but none of live in a perfect world, so let's be a little pessimistic.

Available in black or silver, the Luxa2 P3 power bank looks almost exactly the same as the iPhone 5 itself and comes with a range of charging connectors so, technically, it could also work its magic on Windows phones etc.

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KitGuru says: If you had one of these in your car, office, bag when your iPhone 5 died – then you'd probably be giving praise. But, as with all things in life, price and availability will determine success.

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