I’ve just spotted my favourite travel charger has just had a price-drop on Amazon UK. It is now just £6.00, including 4 x 2300mAh AA batteries. I’ve used one of these for a couple of years on various trips in the US and Europe. It packs down to a small size especially if you are just using a US-style plug. UK and Euro adaptors are included in the pack, and snap on, so that you can set it up for quick UK or Euro use.