TPE New Laptop Battery For Apple MacBook Pro 15" A1281 A1286 (2008 Version) MB772J/A MB772LL/A MB772 MB772/A Battery type: Li-polymer Battery; Capacity: 5200mAh/56Wh; Rating: 10.8V Use the keyboard shortcuts Ctrl+F or -F (Mac) to quickly crosscheck if your requested model is listed in the Fits Compatible Model List. Up to 500 cycles service life, low self-discharge, no memory effect; Dual IC chips provide protection against short circuit, over-discharge, overcurrent. CE/FCC/RoHS certified for product safety. Grade A Cell ensures fast charging and low power consumption; Operation time: Around 2.5 hours. In reality, this will depend on the amount of electricity required by the device and how you use it. TPE only deals with brand new premium replacement batteries. We only use the highest quality cells inside the battery pack so you will have a long service life. Our inventory turns rapidly and you will always receive a freshly manufactured battery.