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8800mAh/99Wh High-Capacity MacBook Pro Battery This 15-inch MacBook Pro battery replacement (A1618, A1398) has been thoroughly tested for over 1500 hours. It offers a capacity of 8800mAh, 11.26V, 99Wh, delivering extended runtime compared to the original battery and most A1398 batteries available for dependable daily power. Ensure Compatible Models This battery is designed for the MacBook Pro 15-inch (Mid 2015), fitting models A1398 and A1618. High Performance Even in Winter Fitted with an intelligent temperature control chip, this battery sustains steady performance. The chip assists in managing the MacBook's temperature during regular use to avoid overheating. Safe Charging for Your MacBook Built with premium lithium-ion cells, this battery replacement contains protection against overcharge, overcurrent, overheating, and short circuits, enabling secure overnight charging. Installation is straightforward and needs only a screwdriver to swap the old battery with this new A1398 MacBook Pro battery. Certifications and Package Contents This product complies with multiple safety test certification standards including FCC, ROHS, and CE. The package contains 1 A1618 replacement battery and 2 screwdrivers