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Apple MacBook Air 12" A1534 Replacement Battery 7.6V 5200mAh

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From $149.99 USD $181.99
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Fits Apple MacBook Air 12" Retina A1534 Early 2015 and 2016 models, replaces OEM part A1527.
7.6V, 5200mAh capacity delivers 39.52Wh to restore full charge cycles on this ultraportable.
Connector seats flush into the battery slot with positive terminals oriented toward the logic board.
We bench-tested the BMS against macOS battery health reporting — accepted full charge cycles without cutoff errors.
After installation, discharge fully to sleep mode then charge uninterrupted to 100% to reset the firmware fuel gauge and clear inaccurate health warnings.
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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.

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🔹 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.

Disclaimer

⚠️ 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

7.6V

Amp

5200mAh

Apple MacBook 12" Retina A1534 — 7.6V Li-Polymer Replacement Battery (A1527)

This 7.6V, 5200mAh (39.52Wh) Li-Polymer cell replaces the A1527 battery in the Apple MacBook 12" Retina A1534. It fits Early 2015 and Early 2016 configurations of this ultraportable. The connector, cell dimensions (268.94 × 156.18 × 6.84mm), and BMS communication protocol match the original specification.

  • A1534 Early 2015 and Early 2016 compatibility: Both model years use the same A1527 cell format, voltage rail, and SMBus handshake. One replacement covers both without any hardware modification.
  • Bench tested on actual hardware: We cycled this cell on an A1534 unit, confirming the BMS negotiates charge termination correctly at 8.4V and that the SMC does not flag an immediate service warning after the first full cycle.
  • First-cycle calibration on the A1534: After fitting, run the MacBook on battery until it reaches hibernate cutoff, then charge uninterrupted to 100%. This gives the fuel gauge IC a clean baseline against the new cell and clears the inaccurate health alert macOS often shows after a cell swap.

Why macOS reports poor battery health immediately after fitting a new A1527 cell

The A1534 stores cycle count and health data in EEPROM on the original battery's BMS. When you install a replacement cell, macOS reads that stored data and may still display the old health rating for the first few cycles. This is a fuel gauge IC calibration issue, not a fault with the new cell. Running one complete discharge-to-hibernate followed by an uninterrupted full charge resets the learn cycle. After two to three cycles the health indicator in System Information will reflect the actual state of the replacement cell.

MacBook A1534 shutting down at 20–30% battery shown

This symptom means the fuel gauge IC has not yet mapped the new cell's voltage curve. The laptop's SMC uses the old discharge profile to predict remaining capacity, and when the cell voltage drops under combined CPU and display load, the voltage cliff arrives earlier than the gauge expects. The SMC interprets this as an emergency cutoff at what appears to be 20–30% remaining. Run two to three full discharge-to-100% cycles and the gauge will recalibrate. If it persists after three cycles, check coconutBattery and confirm cell voltage is reaching at least 8.2V at full charge before each test.

Compatible Models

MacBook Air 12" Retina A1534 Early 2015 MacBook Air 12" Retina A1534 Early 2016 MacBook 12 inch Retina A1534 (Early 2015) MacBook 12 inch Retina A1534 (Early 2016) MacBook 12 inch Retina A1534(EMC 2746) MacBook 12 inch Retina A1534 (EMC 2991) MacBook 12 inch Retina A1534 (EMC 3099) MacBook 12 inch Retina A1534 (Mid 2017) MacBook 12 inch Retina MF855LL/A* MacBook 12 inch Retina MF855LL/A MacBook 12 inch Retina MF865LL/A* MacBook 12 inch Retina MF865LL/A MacBook 12 inch Retina MLHA2LL/A* MacBook 12 inch Retina MLHA2LL/A MacBook 12 inch Retina MLHC2LL/A* MacBook 12 inch Retina MLHC2LL/A MacBook 12 inch Retina MNYF2LL/A* MacBook 12 inch Retina MNYF2LL/A MacBook 12 inch Retina MNYG2LL/A* MacBook 12 inch Retina MNYG2LL/A MacBook Air 12" Retina A1534 (Early 2015) MacBook Air 12-inch Retina A1534 (Early 2016) MacBook Core I5 1.3GHZ 12 inch Retina A1534 (EMC 3099) MacBook Core I7 1.4GHZ 12 inch Retina A1534 (EMC 3099) MacBook Core M 1.1GHZ 12 inch Retina A1534 (EMC 2746) MacBook Core M 1.2GHZ 12 inch Retina A1534 (EMC 2746) MacBook Core M 1.3GHZ 12 inch Retina A1534 (EMC 2746) MacBook Core M3 1.1GHZ 12 inch Retina A1534 (EMC 2991) MacBook Core M3 1.2GHZ 12 inch Retina A1534 (EMC 3099) MacBook Core M5 1.2GHZ 12 inch Retina A1534 (EMC 2991) MacBook Core M7 1.3GHZ 12 inch Retina A1534 (EMC 2991) MF855MF855C/A MF855LL/A* M F855LL/A MF865LL/A MJY32 MJY32LL/A MJY42LL/A MK4M2 MK4M2LL/A MK4N2LL/A MLH72LL/A MLH82LL/A MLHA2LL/A* MLHA2LL/A MLHC2LL/A* MLHC2LL/A MLHE2LL/A MLHF2LL/A MMGL2LL/A MMGM2LL/A MNYF2LL/A* MNYF2LL/A MNYG2LL/A* MNYG2LL/A MF855LL/A MacBook 12 inch Retina A1534(Early 2015) MacBook 12 inch Retina A1534(Early 2016) MacBook 12 inch Retina A1534(EMC 2991) MacBook 12 inch Retina A1534(EMC 3099) MacBook 12 inch Retina A1534(Mid 2017) MacBook Core I5 1.3GHZ 12 inch Retina A1534(EMC 3099) MacBook Core I7 1.4GHZ 12 inch Retina A1534(EMC 3099) MacBook Core M 1.1GHZ 12 inch Retina A1534(EMC 2746) MacBook Core M 1.2GHZ 12 inch Retina A1534(EMC 2746) MacBook Core M 1.3GHZ 12 inch Retina A1534(EMC 2746) MacBook Core M3 1.1GHZ 12 inch Retina A1534(EMC 2991) MacBook Core M3 1.2GHZ 12 inch Retina A1534(EMC 3099) MacBook Core M5 1.2GHZ 12 inch Retina A1534(EMC 2991) MacBook Core M7 1.3GHZ 12 inch Retina A1534(EMC 2991) MJY32MJY32LL/A

Replaces Part Numbers

A1527 661-02267 613-01926 A1705

Technical Specifications

Voltage7.6V
Amp Hours5200mAh
Capacity5200mAh
Rate39.52Wh
Net Weight225.2g /7.94 oz
Gross Weight485.2g /17.11 oz
Approximate Weight485.2g /17.11 oz
Dimension 268.94 x 156.18 x 6.84mm

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 says "Service Recommended" right after I put in a new battery — is the replacement faulty?

The A1534 reads cycle count and health metadata from EEPROM on the battery's BMS chip. When a new cell goes in, macOS pulls stale data from that EEPROM and flags it as a service condition before the fuel gauge IC has run a calibration cycle. We see this consistently on first boot after every cell swap on this model. Run one full discharge to hibernate cutoff, then charge uninterrupted to 100%, and the warning clears within two to three cycles.

System Information shows the wrong Wh rating — it's listing 39.7Wh but the replacement cell is rated 39.52Wh. Is something wrong?

The Wh figure macOS displays is pulled from the EEPROM rated value stored on the BMS, which may differ slightly from the actual cell chemistry in the replacement. This is a data mismatch between the stored specification and the physical cell — not a sign the battery is malfunctioning. The fuel gauge IC will still track real charge and discharge correctly regardless of that displayed figure. Confirm the cell is reaching 8.4V at full charge using coconutBattery; if it is, the cell is operating within spec.

The battery charges to 100% on the first day, then stops at 80% from the second day onwards — what changed?

The A1534's SMC includes a charge-limit feature that activates once it has logged enough cycle data to conclude the battery is in regular use. This 80% ceiling is firmware-controlled by the SMC, not a fault in the replacement cell. Open System Preferences → Battery and check whether "Optimized Battery Charging" is enabled — disabling it removes the cap immediately. If the option is already off and charging still stops at 80%, reset the SMC by holding Control + Option + Shift + Power for ten seconds with the MacBook plugged in, then release.

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