My dad got this charger with his sony camera 3 years ago and passed it on to me as he thought it was junk. I used it several times until I got a 4 bay charger and it did surprise me as a bit of a sleeper - I thought it would be junk but it charged cells consistantly and without incident.
Edit: Sanyo.Eneloop Leave it going for a bit longer and see what happens. It should self terminate, it might take longer due to the slow charge rate, but it should take no longer than 7 hours.