Worked fine for me - even overseas
I bought this charger this summer in preparation for a trip to Europe. We recharged batteries several times while overseas (220V/50Hz), and it worked fine. No problems with the batteries so far after several recharges.
Please don't waste your money!
As several other reviewers have stated these batteries start out strong but fade very quickly. For the first 4 or 5 charges they performed brilliantly, powering my digital camera with ease and allowing me to take many photos. Then came the sudden drop in performance. I was lucky to get 10 quick shots off before the batteries died. Now they won't even power the little wireless mouse I use with my laptop, much less power up a digital camera. I have no idea if there are better alternatives out there but I... more info
DO NOT BUY!
I bought this kit for a work compact digital camera. They seemed to work OK for the first two charges. Then I'd get batteries where only one or two out of four were adequately charged. I'd have to keep swapping the batteries until I found the two strongest. Not sure if its a charger or battery problem, but either way, they're not worth the raw materials they're made of! And no, I didn't have a multimeter at my disposal to check the voltages.
Buyer beware
I opened the package and plugged in the unit, following all instructions. The batteries never charged, i tried moving them to different outlets, even tried an old charger. Still the batteries did not charge. I asked for and received a refund.