I needed a new batter for my RAZR. With the price of this battery being a small fraction of what it costs from Motorola I was more than a little fearful of it being a knock off. It arrived within a few days of purchase and is a true Motorola battery with the hologram on the back. It works fine. It is only a battery so it can't be that exciting, but I would buy another battery like this in a heartbeat. I don't understand how it can be so inexpensive unless Motorola made way to many and this is overstock. Either way, it works for me.