The other battery I put on the charger, a Panasonic, has charged to about 444 mAh. The reason I'm posting this is so I don't forget, I'm going to unplug the charger to swap the charged batteries for other ones to charge. I know you should be able to swap them while it's plugged in and running, but that feels weird to me.
@noiob I believe this would be considered a smart charger. It's an XTAR VC4. Terrible name though.