Excellent charger, but it has a few limitations. It will only charge one battery at a time. It doesn't discharge. It won't do Li-Po's. The description claims it will charge one cell (glow driver) but you need an in-line resister that doesn't come with the charger, (supplied by MRC at no cost if you call them). Although twice the cost, you may want to consider the MRC Super Brain 969. It does all of the above and will charge two packs at the same time. I own both of them.