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Battery type: Li-Polymer; Capacity: 4000 mAH / 7000 mAh; Voltage: 11.1V
Superior Quality: Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and reliability.
Replace for Unibody MacBook Pro 15” A1321 A1286 (only for 2009 2010 Version), 020-6380-A 020-6766-B 661-5211 661-5476
What You Get: 1 x laptop battery,2 x free screwdrivers (only with 7000 mAh battery)
12 months warranty support – 10 days money back guarantee – 100% purchase protection

Battery type: Li-Polymer; Capacity: 4000 mAh Voltage: 10.95V; Cells: 6-cell.
Note: This is not an Apple original battery, its a branded compatible battery
Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability.
About 500 recharge cycles over the life of the battery; CE-/FCC-/RoHS-Certified for safety.
Operation time for standard batteries(eg, 4000mah): Around 2 hours, the actual operation time will depend on how much electricity is required by the device and how you use it.
Warranty: 12 Months warranty, 10 days money return guarantee, 24 x 7 email support.

High quality replacement battery for Apple A1425(EMC 2557) is 100% compatible and will meet or exceeds original Apple battery specifications, all of our batteries for Apple A1425(EMC 2557) are made with high quality battery cells.
Note :1. 11.1V and 11.21V are compatible, they are in common use. 2. This battery(A1437) only fits for Apple MacBook Pro 13.3 Inch Retina A1425(EMC 2557)(Late 2012) and A1425(EMC 2672)(Early 2013).
Chemistry : Li-Polymer Color : Black Voltage : 11.21V Cells : 6 cells