I have tried charging a receiver pack of 4 AA batteries (2300mAh Uniross) but the 1A charge only lasted maybe 10 minutes when it should have been about 2.5 to 3 hours?

I had done the force discharge before charging but it has made no difference at all. Even tried 0.5 A. Also tried other AA batteries - 2100 and 2500...no luck.

However, it had charged my two new 1200mAh receiver hump pack successfully.

Why? [sm=confused.gif]