I bought this battery shortly after updating my A7iii to version 3.0 and have had one minor issue. My camera sometimes does not recognize this battery as the proper battery for my device and will display an alert message saying that the battery is not the right kind. This forces me to flip the on/off switch once more to get the camera to power on. I find this to be odd as the battery that shipped with my camera works fine. It is not a deal breaker, but at the price this should not happen. Other than that it is in theory the same battery that shipped with my camera and seems to be performing the same. I do not trust knock off brands as I have had bad experiences with them in the past, so I sucked it up and dumped the dough on this.