That vaguely familiar chap up there is the HTC One carrying an extra three or four stone in additional flab, thanks to the Mophie Juice Pack. In return for fattening up your phone you get nearly double the battery life, which is a trade off we suspect many will take.
The Mophie Juice Pack for the HTC One contains a 2,500mAh capacity battery, which slightly more than double the One's supplied 2,300mAh unit. Silver and black editions of the case and integrated battery ensure the phone's fat suit matches its natural complexion.
The stock price for the US model of the HTC One battery pack is $99, to which you have to add shipping and VAT if you want Mophie to send it to the UK, taking the total to $133 or about £85 depending on the current fluctuations of the international exchange rate. [Mophie via Ubergizmo]