We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Rectangular black lithium-polymer laptop battery with six cells

myVolts

myVolts A1321 10.95V 77.5Wh laptop battery

SKU CH-0X9M-CBA0X MPN A1321

10.95 V, 77.5 Wh lithium-polymer battery fits 15.4-inch MacBook Pro models from mid 2009 and mid 2010

  • 95V 77.5Wh capacity powers intensive workloads
  • 6-cell Li-Polymer chemistry delivers stable discharge
  • Direct replacement for Apple A1321 battery
  • Fits MacBook Pro 15" Mid 2009 and Mid 2010 models
  • Includes three screwdrivers for straightforward installation

Compatible MacBook Pro 15 models

This replacement battery fits Apple MacBook Pro 15.4 inch unibody models from mid 2009 and mid 2010 only. It matches part numbers A1321, 020-6380-A, 020-6766-B, 661-5211 and 661-5476. Supported systems include MC118, MB985, MB986, MC371, MC372 and MC373 series. It will not work with later Retina or M-series MacBooks.

Li-Polymer 10.95V 77.5Wh specifications

The pack uses a 6-cell lithium-polymer design rated at 10.95 volts and 77.5 watt-hours. It delivers the same voltage and capacity as the original Apple battery for consistent run time. No thermal, noise or power-draw figures are provided by the supplier for normal use.

Three screwdrivers included

The box contains three free screwdrivers sized for the MacBook Pro 15 bottom case and battery screws. They let you open the unibody enclosure and swap the pack without sourcing tools separately. No software or firmware utilities are bundled.

Highlights

  • 95V 77.5Wh capacity powers intensive workloads
  • 6-cell Li-Polymer chemistry delivers stable discharge
  • Direct replacement for Apple A1321 battery
  • Fits MacBook Pro 15" Mid 2009 and Mid 2010 models
  • Includes three screwdrivers for straightforward installation

Specifications

No published specifications for this item yet.

Questions about this item

How do I install the A1321 battery in my MacBook Pro 15" and which step do people often miss?

Remove the bottom case screws with the three included screwdrivers, disconnect the old battery connector, fit the new 6-cell Li-Polymer pack, reconnect the cable firmly, then replace the case screws in the correct order.

What maintenance or replacement will the A1321 battery need over time?

The 77.5Wh Li-Polymer cell degrades with charge cycles; plan to replace the pack once runtime drops below your needs, typically after several hundred full cycles.

What limit appears first during sustained heavy use of the A1321 battery?

The 10.95V 6-cell chemistry hits thermal and voltage sag limits under continuous high draw, reducing available capacity before the pack overheats.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.