Mike,
Unless Ratshack has changed what they've been selling, I'd dump that RS charger quick. I got a charger and battery set from RS couple years ago. Charger was supposed to be intelligent, but it was far from it. Taped a moe show after having used the RS batteries 4-5 times and the batteries died after 45 minutes. Turns out the crappy charger fried the batteries with less than a half dozen uses. Get one of the intelligent chargers from thomas distributing. From what I found the RS batteries are fine, but the chargers are worse than useless.
-Todd