It seems like portable rechargers are cropping up all over the place these days. I was sent this earlier:

Recharge your batteries on holiday - literally - with Energenie for the Traveller

Energenie, the manufacturer of energy-saving and charging accessories, today launches a range of products for campers, festival goers and holiday makers. The Energenie for the Traveller range includes dynamo torches and mobile phone chargers, portable battery chargers, and plug adaptors for over 150 countries - including a World Cup ready charger for South Africa.

Available now from www.energenie4u.co.uk, the new range provides holiday makers with everything they need to use their gadgets abroad, stay green and - with emergency chargers for mobile phones - stay connected.

Alan J. Tadd, Managing Director, Energenie, said: "Whether you're holidaying in the UK or abroad, in a hotel or a field, the Energenie travel range has something to offer. From essential plug adaptors to products that help you stay green on the go - don't pack your case without checking the site."

More information about the range can be found here http://www.energenie4u.co.uk/acatalog/Energenie_for_the_Traveller.html