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Battery Benefits: Over 1000+ recharge cycles; Certified by CE, FCC, RoHS, and UL for safety; An improved circuit board with multiple command chip control provides stable charge and discharge. Overcharge and over-discharge protection ensures efficient charging and reduced power consumption. Compatible Laptop Models: Battery type A2389, designed to replace the battery for MacBook Air 13-inch M1 Model A2337 (2020 released versions). Specifications: Battery Model A2389, Capacity 4380mAh/49.9Wh, Voltage 11.39V, Battery Type Li-Polymer; 100% brand new. Compatible Part Numbers: MGNA3LL/A, MGND3LL/A, MGNE3LL/A, MGN53LL/A, MGN63LL/A, MGN73LL/A, MGN83LL/A, MGN93LL/A, and other compatible models. Enhanced Performance: Upgraded high-performance battery designed specifically for MacBook Air 13 Inch A2337 M1 2020 (EMC 3598) with dependable power delivery. Safety Features: Multiple protection systems including overcharge protection, over-discharge protection, short circuit protection, and temperature control for secure operation