Good grip - Battery's bad

Have the part for several months now in use. The handle itself is my opinion very well made, fits flush, and has no play makes a very high-quality impression. Can not imagine the Canon grip can be much better. Handling is impeccable, crisp and not too big. BUT: The supplied battery's discharge when the camera is within 8 days, you forget to turn off the handle, they are empty after about 2 days. Even a combination of an original battery and one of the supplied battery's does not improve - earlier you would have thought there somewhere a leak exisitiert the empty sucks the battery's ...
On the number of images, as well as the duration of the battery's remains to determine that I can shoot more pictures with an original battery and can operate the camera even after 2 months without the power off ist.Fazit: handle yes, but then with 2 original battery equip's, in which case but still the question is whether a discharge is still taking place. If so, then the handle evaluates certainly Camera visually, but no more, too bad!