I thought this MAY be a useful post. To be fair you can buy mobile phone chargers from Poundland, they usually take 4 x AA batteries. They are OK, but this seems to be a better quality product and takes two of the more common - and overall cheaper - AA batteries. You can also use with rechargeable AAs, as I do, which brings the cost down. It looks as if it comes with a range of adapters, but they don't say for which phones. Handy to take on holidays / keep in your pocket / bag.
Price is £4.95 + £1 delivery (low delivery rate is a temporary offer) less 10% Quidco discount, here's what Gadget Shop say:
"This fantastic On-The-Go Mobile Charger is just one of the latest advances in mobile phone technology hoping to put an end to flat battery syndrome. It comes with a chain for connecting it to your keyring and fits virtually every phone on the market. Whenever your battery is running out of charge all you have to do is plug it in and top it up. The batteries in the On-The-Go Mobile Charger will give you approximately 2 hours of extra stand-by time or 30-50 minutes talk time and since it's powered by straight forward double A's the batteries are easy to replace."
1) you get a FREE 32Gb Mini thumb drive with this and 2) This is NOT like the pound shop chargers. It uses 2 x AA batteries, has an off/on switch and neon indicator, plus a built in inverter to maintain a constant voltage of 5.5 volts throughout the charge cycle so from 2 x AA 2700 NiMh rechargeable batteries, you should, in theory, get 2 full charges out of it. The pound shop ones just take 4 x AAA batteries, not as powerful, and the voltage will drop as the batteries run down.
sorry, 32 MEGABYTE! LOL!