Initially when I have received the battery in the box DAMAGED I say that c was transportation. But after a first use I am saying that AC would be another buyer who had returned. Indeed at first glance nothing differentiates the battery of my origin. But once established and we start that the shooter, we realize that autonomy is 2 to 3 times lower drums of origin. Ca is just short of battery backup time to reload the original. Rebref I do not advise