ive just had a brand new battery fitted to my octy it has more slightly more power that the old one but only just

but the problem is my green machine likes to drink while im not drivin around any sugestion

its not the alternator getting 14V whilest engines running

when engine is turned off showin 12.8V - 13V

plus my passengers window wont work fully automaticly electrical fault???

Did you reset the top position of the closed windows after replacing the battery? Read page 15 of the Owner's Manual for how to do this.

Not too sure what you mean, is the battery going flat?

To reset the windows put them up and hold in the up position for about 4 seconds it should return to auto operation after that.

For the battery you need to see how many milliamps are being drawn from the battery with the car locked and everything off.

If the battery goes flat overnight it's because something electrical is being left switched on. It might be something obvious like the radio, boot light or interior light, or there may be something else drawing current that you can't see and would therefore never suspect.

As martziniuk says, you will need to connect an ammeter in line to see how much, or if any current is being drawn when everything's supposed to be switched off........