I was in desperate need for a replacement battery, as the battery for my MacBook Pro was over 5 years old. Not only was it really old and couldn't hold a charge for longer than 5 seconds (seriously), it was exploding out of the bottom of my mac. So while my mac slid around on my desk on a slight angle everytime I touched it, I decided to buy a new battery. I ended up going with the Anker as it was the only one I saw that was brushed aluminum like the (discontinued) factory mac battery. Not only that, but it got amazing reviews on Amazon by people praising it despite the $70 price tag. Upon opening the package once delivered, I immediately noticed the nice packaging it came in. There were two thick styrofoam pieces to cushion it and the whole thing came in a "frustration free" style cardboard box. Inside was an instruction manual which recommended, like most batteries, to drain the battery and then fully charge it...