Help choosing the right converter/charger?

I finally received the PD4655V and got it hooked up. Took about an hour. It seems to work well. The manual states that the charge light will blink 2 or 3 times a second when in normal charge mode (90% or higher). Although I am counting more like 4 blinks a second. And it has been this way for about 4 hours. I would appreciate if anyone who has used this converter could shed some insight on the light's behavior. The manual is pretty direct about that. But I just wonder if a faster blink might mean something the book doesn't mention. Just trying to make sure the charger is working properly.