New Battery for Apple MacBook Air M4 A3240 S2406 11.4V 55.6Wh, High Capacity, 1-Year Warranty

**Product Overview**
This replacement battery is specifically designed for the Apple MacBook Air M4 (Model A3240, S2406). It uses high-quality lithium-polymer cells to restore your laptops original runtime and charging stability. Whether you need a backup or are replacing an old, swollen, or dead battery, this unit offers a cost-effective solution without sacrificing performance.

**Important Voltage Warning**
Please verify your original batterys voltage before purchasing. This battery is rated at 11.4V (nominal). Using an incorrect voltage battery may cause charging failure, system instability, or permanent damage to your device. If your original battery voltage is different (e. g., 7.6V or 14.8V ), this product will NOT work.

**Compatibility List**
- Apple MacBook Air M4 (2024) Model A3240
- Apple MacBook Air M4 (2024) Model S2406
*Note: Not compatible with MacBook Air M1/M2/M3 or any other MacBook Pro models. *

**Specifications**
- Brand: Generic (High-Quality Replacement)
- Battery Type: Li-Polymer (Rechargeable)
- Voltage: 11.4V
- Capacity: 55.6W h / 4900mAh (typical)
- Cell Quality: Grade A
- Cycle Life: 800 cycles
- Protection: Overcharge, over-discharge, short circuit, over-temperature
- Certification: CE, RoHS, FCC
- Color: Black
- Package Includes: 1x Battery, 1x Screwdriver Kit (if applicable), 1x User Manual

**Comparison Table**

| Feature | Original Apple Battery | Our Replacement Battery |
|---------|------------------------|------------------------|
| Voltage | 11.4V | 11.4V (Exact Match) |
| Capacity | 55.6W h | 55.6W h (Same) |
| Cell Grade | Original | Grade A (High Quality) |
| Cycle Life | ~1000 cycles | 800 cycles |
| Price | High | Affordable |
| Warranty | 1 Year (limited) | 1 Year (full) |

**Installation Tips**

1. Power off your MacBook Air completely and unplug the charger.

2. Use a P5/P6 screwdriver to remove the bottom case screws (keep them organized).

3. Disconnect the original battery connector gently from the logic board.

4. Remove the old battery (if adhesive is used, carefully pry it off).

5. Place the new battery into the compartment, connect the cable firmly, and close the bottom case.

6. Charge the battery to 100% before first use for optimal calibration.

7. If your MacBook does not power on after installation, try resetting the SMC (System Management Controller) by holding Shift+Control+Option+Power for 10 seconds.

**Safety & Quality Assurance**
- Each battery undergoes strict testing for voltage, capacity, and safety before shipping.
- Built-in protection IC prevents overcharging, overheating, and short circuits.
- Environmentally friendly materials no memory effect, low self-discharge rate.

**Customer Support**
We stand behind our products. If you have any questions about compatibility, installation, or performance, please contact us. We will respond within 24 hours and provide a hassle-free replacement or refund if needed.

**Note: ** This is a third-party replacement battery, not an original Apple product. It is designed to meet or exceed OEM specifications.