Puredick Li-Polymer 6-cell 66Wh 10.95V Laptop Battery for A1321, A1286, Unibody MacBook Pro 15-Inch, MB985 MB986J/A MC118 MB986 Premium battery: the Puredick battery is made of 100% Grade A cells (Sony) for 6000mAh premium capacity and reliability instead of low grade or recycled cells, support long standby time. Precision-engineered and rigorously tested for voltage , compatibility and safety, 100% OEM Compatible & 100% New Components - Guaranteed to meet the specifications of the original device. High quality connector provide stable input current for safety and durable use; fire-resistance ABS+PC alloy battery shell prevent the damage of computer. Built in advanced and high performance PCB: make it safe with overcharge & over-discharge, over-current & short circuit protection. ong cycle life: Up to 500 recharge cycles over the life of the battery which also extends the life of your laptop. High quality certified: CE-/FCC-/RoHS-Certified for safety and come with 12 months warranty.(Respond in 24 hours by email)