Whitenergy 10387 is a laptop battery compatible with Apple's MacBook Pro 15.4-inch laptops (Mid-2009 to Mid-2012 models). It has a standard capacity of 6200mAh/7.4V and a maximum capacity of 7800mAh/10.95V. The battery is made with 6 cells of rechargeable Li-ion, providing a longer battery life. The 10387 also supports high-drain applications, including gaming, music, and video playback. It is also designed with a built-in thermal protection system, which helps protect the battery from over-heating. The battery also includes a durability chip that can record its cycle count, helping users monitor and extend its lifespan. The 10387 battery comes with a one-year warranty.