Any Socket charger is usually enough mate. It's the plug hat fits into camera which maybe tricky.
Most AC to DC USB charger have an output current of at least 5v@ 100mA for the likes of mobile phones and bluetooth devices etc. The likes of Tablet chargers have at least an output current of 2amps (2000mA) @ 5v
Again finding a USB to the appropriate plug for your camera if you don't have one could be an issue If you have lost it? What camera is is?