This product worked fine when I first bought it. Batteries charged in 1 hour, very convenient.HOWEVER, after a few months I started having problems. I would charge the batteries for 1 hour, until the indicator lights indicated that they were fully charged. But when I tried to use the batteries in my camera, they depleted after only a few minutes of use. The batteries also depleted quite rapidly when not in use, they were dead after about one day unused.I do not know whether the problem is with the batteries or with the charger, but this product is now unusable.