I've a 350D with grip and a 5D with grip and which arrived from Hong Kong with those cheap batteries.
One may recognise them as a lighter colour grey than the deeper grey or black of other brands.
The attraction of course, is the price, typically €10 against the €40 or more in my local shop. Sometimes they are even thrown in free, but I've had two DOAs which was not worth the bother of replacing.
For the price the service is OK but I've found one needs to be recharging then quite often. My 5D would hardly go a week on them and with the recent cold spells I've been caught out with flat batteries.
I've recently purchased new batteries from the UK at a very reasonable €15 and I'm enjoying a good increase in my shots per charge.



