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Rectangular silver laptop battery with six cells and connector strip

myVolts

myVolts laptop battery 66.6Wh 11.1V 6-cell MacBook Pro 13 A1278 A1322

SKU CH-N7X3-46ASE

Replacement Li-ion battery rated 66.6Wh at 11.1V for MacBook Pro 13-inch models from 2009 to 2012

  • 6Wh capacity powers your MacBook Pro through a full workday
  • 6-cell lithium-ion design delivers stable 11.1V output for reliable performance
  • Fits 13-inch models A1278 and A1322 from Mid 2009 to Mid 2012
  • Replaces Apple part numbers 661-5229 and 661-5557 for exact compatibility
  • Rated for up to 500 recharge cycles with CE, FCC and RoHS safety certification

66.6Wh Li-ion battery for 13-inch MacBook Pro

This 66.6Wh, 11.1V lithium-ion battery replaces the original Apple A1322 pack in 13-inch MacBook Pro models from Mid 2009 through Mid 2012. It fits machines identified as A1278 and covers part numbers such as 661-5229 and 661-5557. The six-cell design targets owners of these specific unibody models who need a direct replacement.

66.6Wh capacity rated for 500 recharge cycles

The 66.6Wh rating restores the factory runtime specification for the supported 13-inch Pro models. The manufacturer rates the pack for up to 500 recharge cycles over its service life. Capacity will gradually diminish as the cycle count approaches this limit, eventually requiring another replacement to regain full runtime.

CE FCC RoHS certified safety compliance

The battery carries CE, FCC and RoHS certifications, confirming it meets the declared safety and environmental standards for the markets where those marks apply. No additional software, drivers or hardware accessories are included in the package. The certifications are the only bundled assurance beyond the physical cell pack itself.

Highlights

  • 6Wh capacity powers your MacBook Pro through a full workday
  • 6-cell lithium-ion design delivers stable 11.1V output for reliable performance
  • Fits 13-inch models A1278 and A1322 from Mid 2009 to Mid 2012
  • Replaces Apple part numbers 661-5229 and 661-5557 for exact compatibility
  • Rated for up to 500 recharge cycles with CE, FCC and RoHS safety certification

Specifications

No published specifications for this item yet.

Questions about this item

Will the 66.6Wh 11.1V 6-cell battery fit my Mid 2012 MacBook Pro 13 A1278 that currently uses part 661-5229?

Yes, this battery replaces Apple part numbers 661-5229 and 661-5557 and is listed for MacBookPro9,2 models MD101LL/A and MD102LL/A.

How can I verify the 66.6Wh 11.1V battery is working correctly after I install it in my MacBook Pro 13?

macOS will report the design capacity near 66.6Wh and show the cycle count starting from zero; System Information lists the voltage as 11.1V and confirms six cells.

What comes in the box with the 66.6Wh 11.1V 6-cell battery and what must I supply myself?

The package contains the Li-ion battery only; you will need your existing MacBook Pro 13 screwdriver set and the original MagSafe adapter to charge it.

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