I am with Eneloop batteries actually well satisfied, the promised 80-90% performance after several months of storage corresponds to reality However, I have other Eneloops (1.5 years ago ordered) the problem they koridieren or leak if they are like a long time in a cold environment. In my case I had stored the batteries in a LED lamp in the garden shed and not used during the winter. In spring all 4 batteries corroded (brown liquid), they would, however, still work but were discarded for safety reasons.
