ASUNCELL MacBook Pro 15" A1321 A1286 73Wh Battery

If your MacBook Pro shows limited runtime or the original battery no longer holds charge, this ASUNCELL replacement restores portable performance while matching the power specifications of the original A1321/A1286 packs. The unit is made to fit the 15.4" MacBook Pro versions from Mid 2009 and Mid 2010 and comes with three screwdrivers for installation. It has undergone safety testing and includes protective circuits to defend against overcharge and discharge.

Which MacBook Pro models will this battery work with?

This battery is engineered for specific 15.4" MacBook Pro models produced in Mid 2009 and Mid 2010. Confirm your model identifier or Apple part number before purchase to ensure exact compatibility.

• Mid 2009: MC118LL/A, A1286, MacBookPro5,3 and MacBookPro5,4 variants (MB985/MB986 series).
• Mid 2010: MC371LL/A, MC372LL/A, MC373LL/A — MacBookPro6,2 A1286 models.
• Replacement P/N examples: 020-6380-A, 020-6766-B, 661-5211, 661-5476, 661-5844.
• Always verify your MacBook’s model year and EMC/part number in About This Mac.

How long will this ASUNCELL battery last and how safe is it?

The battery uses Li‑polymer chemistry and is rated for more than 500 recharge cycles under normal conditions. It includes overcharge and over‑discharge circuit protection and has passed CE, FCC, and RoHS testing to meet common safety standards.

• Rated capacity: 73Wh at 10.95V with 9 cells for sustained runtime.
• Protected by charging/discharging circuits to reduce risk of damage.
• Manufacturing QC and certification for electrical safety and environmental compliance.
• Expected cycle life: 500+ recharge cycles with typical usage patterns.

What’s included and how easy is installation?

The package ships with the battery and three screwdrivers to help you open the MacBook Pro’s bottom case and swap the pack. Installation is straightforward for users comfortable with small electronics; follow step‑by‑step guides or professional service if unsure.

• Included items: ASUNCELL A1321/A1286 battery and three driver tools for common screws.
• Suggested steps: power down, remove bottom screws, disconnect the old battery, connect the new unit, reassemble.
• Tip: keep a tray for screws and ground yourself to avoid static discharge.
• Seek certified technicians if you prefer not to self‑install.

What warranty and support does ASUNCELL provide?

ASUNCELL offers a 12‑month limited warranty and 24/7 email support for this battery, giving buyers a clear channel for troubleshooting or replacement during the warranty period. Contact information is provided with the product for claims and technical questions.

• 12 months warranty from date of purchase for manufacturing faults.
• Around‑the‑clock email support for installation help and warranty claims.
• Return or replacement options according to warranty terms.

Who is this for: This ASUNCELL A1321/A1286 battery is intended for owners of 15.4" MacBook Pro (Mid 2009 and Mid 2010) who need to restore mobile battery life affordably without buying a new laptop. It suits DIY installers who can handle basic disassembly, small repair shops replacing aging packs, and anyone wanting a certified, higher‑capacity replacement that matches original Apple specifications and part numbers.