I read the earlier reviews and decided to give this a product a try anyway. I have owned this charger/battery combo for about a month now and the first set of batteries are still going strong in my Digital camera. They have already lasted much much longer than alkaline which I had used initially. These are NiMh. I believe they are 2000 or 2100 MAH. They are the new slow discharge design similar to Sanyo Enloop etc. My experience has been very favorable and I was very quickly able to determine the type and capacity. NiMh is imprinted on the battery itself.Previous reviews seem to focus on "unknowns" about this product that I had no problem finding. I personally am very impressed with this product after having actually used it for a period of time. I plan to purchase another set for my camera flash and would highly recommend.