Answer
May 19, 2026 - 05:35 PM
Yes, this battery is compatible with part number 661-5557. Matching the correct part number is crucial for performance and safety, so this compatibility is valuable for accurate replacement.
Is this battery compatible with part number 661-5557? New Genuine Apple MacBook Pro A1278 mid 2009 MB990LL/A MB991LL/A Battery 63.5Wh Batteries
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Open May 19, 2026 - 05:35 PM
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New Genuine Apple MacBook Pro A1278 mid 2009 MB990LL/A MB991LL/A Battery 63.5Wh
New Genuine MacBook Pro A1278 Battery. Features and Technical Specifications: Number of Cells: 6Capacity: 63.5WhVoltage: 10.95VColour: Black Compatible Part #'s: A1322, 661-5229 661-5557, 020-6547-A 020-6381-A 020-6764-A 020-6765-A
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