yea, I used them and they suck.
I bought the Ultrafire 3600 mAh batteries, put them into my VTR (they didnt fit, 1/8 inch too long)...so I popped them into my Kamry 200 and they didnt last half as long as the Samsung 2000 mAh batteries I have.
Cheap batteries, I got them off Amazon 2 for $8 but trash.