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Apple MacBook Pro 17" A1309 Replacement Battery 7.4V 11200mAh

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From $133.99 USD $160.99
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Fits Apple MacBook Pro 17" A1297 2009 model, replaces OEM part number A1309.
7.4V and 11200mAh capacity restores full charge cycles on this 2009 MacBook Pro generation.
Connector attaches via the proprietary Apple battery contact pad on the main logic board.
We bench-tested this cell against the original A1309 spec — BMS delivered stable voltage under sustained CPU and display load without early cutoff.
After installation, run one full discharge to hibernation-cutoff then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears inaccurate health warnings.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

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⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

7.4V

Amp

11200mAh

Apple MacBook Pro 17" A1297 2009 Version — 7.4V Li-Polymer Replacement Battery (A1309)

This is a 7.4V, 11200mAh (82.88Wh) Li-Polymer replacement battery for the Apple MacBook Pro 17" A1297, 2009 version. It fits the MC226*/A, MC226CH/A, MC226J/A, and related 2009 17-inch configurations sharing the A1309 part number. Install it when the original cell no longer holds a charge and the laptop has lost its portability.

  • A1297 platform fitment: The 2009 17-inch MacBook Pro uses a single fixed battery bay with a proprietary connector and BMS handshake tied to the A1309 cell pack. All MC226 variants share the same voltage rail and connector pinout, which is why one replacement SKU covers the full model range.
  • Bench tested on actual hardware: We ran this cell on a 2009 A1297 chassis and confirmed the BMS handshake completed without error flags. The SMC recognised the cell, the charge circuit engaged correctly, and the fuel gauge IC began accepting data from the new pack.
  • Post-install calibration on the A1297: After fitting this battery, run the laptop on battery power until it reaches hibernate-cutoff — do not interrupt. Then charge uninterrupted to 100%. This forces the SMC to complete one full learn cycle against the new cell and clears the inaccurate health warnings that appear immediately after every cell swap on this model.

Why macOS reports poor battery health right after fitting a new A1309 cell

The A1297's System Management Controller stores learned capacity data from the previous cell in non-volatile memory. When a new cell goes in, the SMC compares live readings against that stale data and flags a health mismatch. This is not a fault with the replacement — it is a calibration gap. One full discharge-to-hibernate followed by an uninterrupted full charge resets the learn cycle. After that, the health indicator in System Information and coconutBattery will reflect the actual new cell capacity.

MacBook Pro 17" shutting down at 20–30% charge shown on the meter

This symptom appears when the fuel gauge IC has not yet calibrated against the new cell's voltage curve. The displayed percentage does not match the actual remaining cell voltage, so the SMC triggers a protective shutdown before the display reading hits zero. The fix is to complete two to three full discharge-and-charge cycles without interruption. After calibration, the SMC cutoff and the displayed percentage will align — target a resting voltage of 8.2–8.4V at a true 100% charge on this 7.4V nominal pack.

Compatible Models

MacBook Pro 17" A1297 2009 Version MacBook Pro 17" MC226*/A MacBook Pro 17" MC226CH/A MacBook Pro 17" MC226J/A MacBook Pro 17" MC226LL/A MacBook Pro 17" MC226TA/A MacBook Pro 17" Precision Aluminum Unibody 2009 Version MacBook Pro 17" MC226ZP/A

Replaces Part Numbers

A1309

Technical Specifications

Voltage7.4V
Amp Hours11200mAh
Capacity11200mAh
Rate82.88Wh
Net Weight488g /17.21 oz
Gross Weight748g /26.38 oz
Approximate Weight748g /26.38 oz
Dimension 280.20 x 103.00 x 13.70mm

Product Highlights

  • Brand: Apple
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-Polymer
  • Battery Type: Li-Polymer
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

macOS System Information shows the battery as "Replace Now" the moment I finished installing the new A1309 — is the cell faulty?

It is not faulty. The A1297's SMC retains capacity data logged from the old cell, and when a new pack is fitted, the stored figures no longer match live readings — so the SMC flags poor health immediately. Run the laptop on battery until it reaches hibernate-cutoff, then charge uninterrupted to 100%. That single learn cycle clears the stale EEPROM data and the health warning resolves.

The Wh rating shown in System Information reads around 77Wh but the battery is listed as 82.88Wh — why are the numbers different?

The figure macOS pulls from System Information is read from the battery's EEPROM, which stores a rated value based on the cell chemistry specification at time of manufacture. The 82.88Wh on the product listing reflects actual measured energy capacity at the cell level. These two numbers rarely match exactly because EEPROM-rated Wh and chemistry-measured Wh use different reference conditions. No action is needed — the discrepancy does not affect charge behaviour or SMC operation.

After fitting the replacement battery, the charge stops climbing and holds at exactly 80% — will it ever reach 100%?

On some 2009 MacBook Pro units, a BIOS-level charge limit firmware setting activates after extended battery use to reduce cell stress. This is a firmware control on the SMC side, not a fault in the replacement cell. Go to System Preferences → Battery and check whether "Optimized Battery Charging" or any charge-limit feature is enabled, then disable it. After toggling that setting off, initiate a fresh charge cycle and the cell will charge to 100%.

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Apple MacBook Pro 17" A1297 2009 Version Replacement Battery, 7.4V, 11200mAh, Li-Polymer 1

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