Battery type: rechargable Li-Polymer battery.
Voltage: 7.6V.
Capacity: 7200mAh/55Wh, 4 cells.
Up to 500 recharge cycles over the life of the battery. CE-/FCC-/RoHS-Certified for safety. Built-in circuit protection ensures both safety and stability.
Battery operation time: approximately 4 hours. Actual operation time will depend on how much electricity is required by the device and how you use it.
Please install the battery and reset it according to our user manual asap after receiving, do NOT leave it unused for a long time (2 months), in case of any potential damage.
Please be noted that this battery is compatible for MacBook Air 13" 2010-2015 version ONLY. Check both model number and Apple year to choose the right battery you need, or contact us for professional suggestion!