Battery type: Li-ion; Capacity:63.5Wh; Voltage: 10.95V; Model: ZX50 Fits P/N: 020-6547-A / 020-6765-A / 661-5229 / 661-557 Compatible Models: Apple Macbook Pro 13 Inch battery for 2009 2011 2 012 Version, MB990*/A, MB990CH/A, MB990J/A, MB990LL/A, MB990TA/A, MB990ZP/A, MB991*/A, MB991CH/A, MB991J/A, MB991LL/A, MB991TA/A, MB991ZP/A, MC374LL/A, MC375LL/A, MC700, MC700B/A, MC700E/A, MC700J/A, MC700LL/A, MC700TA/A, MC700X/A, MC700ZP/A, MC724, MC724B/A, MC724E/A, MC724J/A, MC724LL/A, MC724TA/A, MC724X/A, MC724Z. P/A, MD101LL/A, MD102LL/A, MD313LL/A, MD314LL/A Fast charges and low power consumption; Built-in circuit

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