well, I wanted you to use the smaller chargers first but as long as you monitor them constantly, it'll be okay. Make sure you top them off with the small chargers after using the black and decker. Sounds like your cells are pretty balanced. That's really good. The cells will typically go up to about 3.75v or 3.72v...don't worry. As long as they don't go over about 3.8v, you are okay. You can stop them at 3.65 or 3.68v if you are worried, though. You should typically start to see the current cut back when teh cells are at about 3.55v or 3.60v . Make sure it's on "Gel" setting which it usually selects that automatically anyway.

Let me know if you saw the current taper off...and count down ...if you were using a 6 amp setting...it should have went like this 5.9...5.8....5.5...5.1...4.9...3.5...like that all the way to 0 and then it will say "Full". As long as you have the same charger as I do which you do, it will stop and not damage the batteries. I would just monitor them on the first charge or two. Don't forget to top them off with the small chargers afterwards. Those you can leave by themselves and not worry about.

Once you get the first charge in and topped-off, then it'll be real easy. You won't have to worry about them. It's the first charge that is the hardest because you don't know where the capacities are at and if they are balanced or not.

If you want to know exactly when it will stop, the Black and Decker will typically stop when the 4 cell pack gets to about 14.88v . So 14.88 / 4 = 3.72v per cell. It's a little higher than we want but I've been using it since January and it doesn't harm them. To really harm the cells, you'd have to take it above 4.2v .