Replacement Battery for Apple MacBook PRO 13" Unibody A1342 A1278 A1322 (5400mAh) Replacement Battery for Apple MacBook PRO 13" Unibody A1342 A1278 A1322 MB990LL/A, MB991LL/A, Guaranteed to meet or exceed OEM power specifications. Battery Type: Li-ion Polymer Voltage : 10.95V Capacity : 5400mAh, 60WH