Lidl have a great offer on rechargeable batterries in store at the moment, they have twin packs of NiMH "C" and "D" for only €3.99 each, I know these are rated above 2500 mAh. Also "AA" 4 packs are only €3.99 and have a similarly high rating. And finally single "PP3s" are only €3.99 also, although the rating is only 200mAh, as other posters suggest. I don't think you're going to get better preforming PP3s- the batteries are too small, they're composed of 6 cells which individually must be quite small and therefore have very little capacity overall. I priced these batteries against Argos and they are less than 1/2 price in most instances, with the mAh ratings significantly better also.