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Rectangular black lithium-ion battery pack with connector ribbon

CPY

CPY A1321 laptop battery 15" MacBook Pro A1286 Mid 2009 2010 77.5Wh

SKU CH-B79E-4VR0T

A 6-cell lithium-ion replacement battery for 15-inch MacBook Pro models from mid 2009 and 2010, rated at 77.5 Wh and 10.95 V

  • ColorBlack
  • TypeBattery
  • CompatibilityFor Apple MacBook Pro
  • Battery Type6 Cell Lithium-Ion
  • Battery Voltage10.95V
  • Battery Capacity73Wh
  • Fits 15-inch MacBook Pro Mid 2009 and 2010 models
  • Replaces original Apple part numbers A1321 661-5211 661-5476
  • 5Wh capacity restores full runtime for daily work
  • 95V 6-cell lithium-ion chemistry matches factory specification
  • UL certified for electrical safety and reliable operation

Compatible 15-inch MacBook Pro Battery

This replacement battery fits 15-inch MacBook Pro models A1286 from Mid 2009 and 2010. It matches part numbers A1321, 020-6380-A, 020-6766-B, 661-5211 and 661-5476. The six-cell lithium-ion pack delivers 10.95V and a rated capacity of 77.5Wh. It is designed for owners restoring unibody aluminium machines.

Sustained discharge behaviour

The 77.5Wh cell pack supplies steady power through long work sessions rather than short bursts. UL certification confirms the pack meets safety standards for continuous operation. Capacity is specified at 77.5Wh by the manufacturer while the specification sheet also lists 73Wh. Buyers needing higher capacity for extended mobile use will not find a larger option in this form factor.

Connector and firmware limits

The battery uses the proprietary Apple connector and communicates with the system management controller. It replaces original packs in models identified as MacBookPro5,3, MacBookPro5,4 and MacBookPro6,2. Machines outside the listed Mid 2009 and 2010 model ranges are not supported. Builders adapting this pack to other laptops cannot rely on the original firmware handshake.

Highlights

  • Fits 15-inch MacBook Pro Mid 2009 and 2010 models
  • Replaces original Apple part numbers A1321 661-5211 661-5476
  • 5Wh capacity restores full runtime for daily work
  • 95V 6-cell lithium-ion chemistry matches factory specification
  • UL certified for electrical safety and reliable operation

Specifications

BrandA-PPLE
ModelA1321 020-6380-A 020-6766-B 661-5211 661-5476
ColorBlack
TypeBattery
CompatibilityFor Apple MacBook Pro
Battery Type6 Cell Lithium-Ion
Battery Voltage10.95V
Battery Capacity73Wh
FeaturesUL Certificated
FunctionUL Certificated
Weight8oz

Questions about this item

Does the 10.95V 77.5Wh battery run hot during all-day use?

Lithium-ion cells at 10.95V typically stay cool under normal loads; the pack has no active cooling, so temperatures follow the MacBook Pro's own thermal design.

Must the MacBook Pro A1286 already have a working logic board and MagSafe charger for this battery to function?

Yes, the battery connects to the existing logic-board connector and charges through the original MagSafe port; both must be operational.

Will this A1321 pack fit the 2009 MacBookPro5,3 and the 2010 MacBookPro6,2 unibody models without modification?

The part numbers A1321 020-6380-A 020-6766-B 661-5211 661-5476 match both the Mid 2009 and 2010 15-inch Aluminum Unibody A1286 series.

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