TREE.NB battery front view for MacBook Pro 15.4 inch with 6-cell design
TREE.NB A1321 side contacts detail showing reliable connectors
TREE.NB A1321 label detail with compatibility codes
TREE.NB cell closeup highlighting Grade A cells
TREE.NB battery installed in MacBook Pro for a proper fit
TREE.NB packaging box indicating safe shipping
TREE.NB quality assurance stamp on the battery
TREE.NB battery in use powering a MacBook Pro
TREE.NB assembly process illustrating 6-cell construction

TREE.NB

TREE.NB A1321 A1286 Laptop Battery for MacBook Pro 15.4 inch Mid 2009/2010 – 73Wh, 6-Cell, 10.95V

Free U.S. shipping and free 30-day returns. Check the compatible models in the description below.

$48.19

In stock. Ships free, usually within 1–4 business days.

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Spare Keep a spare (2)

Check the listed compatible models and specs before you order. Questions? Email us.

Multi-device One for each device (3)

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Free shipping

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Free tracked shipping on every order. Most orders arrive within 3–8 business days.

Free 30-day returns

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Return eligible items within 30 days of delivery for a full refund. We email you a prepaid return label.

Peak-demand shipping delays

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During high demand, deliveries may experience short carrier delays. Tracking updates remain active for every order.

Email support

Questions about fit or an order? Email nexoltic@gmail.com. We reply on business days (Mon–Fri).

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Product details

Premium compatibility for MacBook Pro 15.4" models

The TREE.NB A1321 A1286 battery is designed for MacBook Pro 15.4 inch laptops from mid-2009 and mid-2010. With a nominal 10.95V and a robust 73Wh capacity, this 6-cell pack aims to deliver reliable power while staying mindful of weight and balance for everyday use, travel, and focused work sessions.

Key specifications at a glance

  • Voltage: 10.95V — Capacity: 73Wh — Cells: 6
  • Up to 500 recharge cycles over the life of the battery
  • Model name: A1321, compatibility across Mid 2009 and Mid 2010 MacBook Pro 15.4" variants
  • Compatible part numbers include 661-5211, 661-5476, 020-6766-B, and 020-6380-A
  • Supports multiple MBP 15.4" SKUs: MC118LL/A, MB985LL/A, MB986LL/A, MC371/372/373 ser ies
  • 100% new from manufacturer with Grade A cells for consistent energy delivery
  • Built-in circuit protection for safer charging and storage

In practical terms, this battery can help you extend workflow sessions, reduce the need for constant outlet access, and maintain steadier startup performance during busy days. The pack is designed for seamless replacement, aligning with the original part configurations to support your MacBook Pro’s power needs.

Quality, safety, and service

  • Quality assurance backed by factory testing and safety-focused design
  • 24 x 7 email support to help with installation questions or use-case guidance

Note: While performance can vary with usage patterns and battery health, the spec-driven design and protection features aim to provide a dependable, non-deceptive power option for your MacBook Pro 15.4". Always verify model compatibility before purchase to ensure a proper fit and optimal experience.

FAQ

Q: Is this battery compatible with my MacBook Pro 15.4 inch Mid 2009/2010?

A: Yes. It fits MacBook Pro 15.4" models from mid-2009 and mid-2010 with the listed part numbers.

Q: What makes TREE.NB A1321 battery reliable?

A: 100% new with Grade A cells, factory-tested, and equipped with circuit protection for safe, stable performance.

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