Original remains original, even with small parts

Certainly there are now "replicas" of CANON Camera Battery Pack LP-E6 for EOS 5D MK II, but I trust in the original. With "Third-Party" I had been shipwrecked because they did not keep the capacity for so long. Two cheaper batteries were already defective after 100-fold loading. That has not happened to me with the products sold under "CANON" batteries. Of course, as I suspect strongly, these batteries are not manufactured by CANON but the name stands for quality, and that counts alone. I have been working professionally in the daily press coverage and must be able to rely on the equipment. Sure, there are now good the same type battery (Hahnel, Ansmann), but are so much cheaper then even that would be worth the risk. Even with the original batteries CANON worth a price comparison among different providers. In this case, the direct purchase on Amazon was the cheapest.