I just wanted to say thanks to you guys,

I was going to buy the "official" Sony prs 505 charger (rrp £39.99 in the UK) then saw this thread & checked out the local hypermarket. They had a compatible one 110-240V / 5v 2A output for 7.9 Euro's

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It looks the same as the previous photo's (detachable ac cord) works a treat
I would not have bought / used a cheap flea market one, but Carrefour are a big organisation & I don't' think they risk their reputation on poor quality products.
Edit 03/17
Just another thought, the Sony battery is a 3.7 volts 750mAh, Lithium Polymer same as in my Motorola Phone. Why on earth would it need a charger with a 2000mA capacity?
My phone charges in 2 hrs the same as the Sony from a charger with an output of 350mA though 6.25 volts. as the battery supposedly contains charge / over volt control circuits why would the Motorola charger not work. (not that I intend to try it now!)
Any electronic experts care to comment?