This replacement battery for the Canon Eos 5d mk 11 comes with its own dedicated battery charger which is useful as the Canon charger doesn't work with it.
It does everything a battery should do, It charges quickly and is an inexpensive alternative to the canon branded battery .
However it is not recognised by the Camera so an acurate update of battery charge status is not available when using the battery alone or in a Battery grip. This means that when using the battery you are always registering at maximum half charge or non at all -I don't know about you but if I was shooting something important and your battery status was only a half I would be constantly worried if the batteries would fail at an important stage of the shoot. Next time I will go for the Canon option