DESC: The Rechargeable Battery for 15" MacBook Pro is a rechargeable, 60-watt-hour lithium-polymer battery for the 15" MacBook Pro notebook computer. The battery is identical to the one that ships with the laptop, allowing it to serve as a spare or a replacement. It features integrated charge indicator LEDs to give you an idea of its current capacity. This is an excellent solution for anyone who needs to replace their MacBook Pro battery or would simply like a spare for extended usage away from a power source.