The MacBook Air is a popular ultrabook from Apple, known for its portability and extended battery life. The heart of this autonomy is the battery, which inevitably degrades over time. When replacement becomes necessary, users face a choice between Apple’s original  MacBook Air batteries and third-party alternatives. In this article, we examine all the important aspects to help you make the right decision.

Technical Specifications of Original MacBook Air Batteries

Original MacBook Air batteries are distinguished by their high quality and reliability. Let’s review the specifications for different models:

• MacBook Air 13” (2013-2017): A1496, 7150 mAh, 54.4 Wh, 7.6 V
• MacBook Air 13” (2018-2020): A1965, 4380 mAh, 49.9 Wh, 11.4 V
• MacBook Air 13” M2: A2669, 52.6 Wh, 11.4 V, Li-polymer
• MacBook Air 15” M2: A2797, 5762 mAh, 66.5 Wh, 11.54 V

Interestingly, despite the reduced capacity in 2018–2020 models, battery life has not decreased due to optimized power consumption. Newer models based on Apple Silicon demonstrate even greater efficiency, providing up to 18 hours of operation on a single charge.

Classification of Third-Party Batteries

The market offers numerous non-original batteries for the MacBook Air. These can be divided into several categories:

1. Original PRC — manufactured in certified factories in China.
2. Class AA — high-quality alternatives.
3. Class AAA — mid-level quality.
4. Class AAA+ — premium alternatives, closest to the original.

Differences between classes are evident in capacity, performance, and service life. Original PRC and AAA+ typically demonstrate characteristics most similar to Apple’s original batteries.

Battery Performance Testing

Various tests are conducted for objective battery evaluation. Standard methodology includes:

• Online video playback.
• Web browsing with multiple tabs open.
• Performing everyday tasks (working with documents, email).

Test results show that original batteries typically provide the advertised battery life. High-quality AAA+ alternatives can approach these metrics, falling behind by only 5-10%. Lower-class batteries often demonstrate significantly less capacity and operating time than claimed by manufacturers.

Issues with Non-Original Batteries

Using third-party batteries may lead to several problems:

• Rapid capacity degradation — some alternatives lose up to 20% capacity after just 6 months of use.
• Compatibility issues — the system may not recognize the battery or may incorrectly display charge levels.
• Potential risks to the device — low-quality batteries may cause overheating or damage to MacBook components.

User experience indicates that saving money on batteries often results in additional expenses and future problems. However, quality alternatives from reputable manufacturers can be a reasonable alternative to original batteries.

Battery Degradation Over Time

All lithium-ion batteries are subject to natural degradation. The speed of this process is influenced by:

• Number of charge-discharge cycles.
• Operating temperature conditions.
• Depth of discharge.

Interestingly, Apple Silicon-based MacBook Air models demonstrate slower battery degradation compared to Intel models. This is due to more efficient power consumption and reduced device heating.

Apple considers a battery worn out after 1,000 charge cycles or when its capacity drops to 80% of its original. However, many users report acceptable battery performance even after surpassing this threshold.

DIY Replacement vs. Service Center Repair

Replacing a MacBook Air battery is a procedure requiring specific skills and tools. DIY replacement carries risks:

• Component damage during disassembly.
• Compromise of water resistance.
• Warranty voiding.

The procedure requires special screwdrivers, plastic pry tools, and thermal paste. Replacement costs at authorized Apple service centers range from $129 to $199, depending on the model. Unauthorized service providers may offer the service at a lower price, but this could affect the quality of work and components used.

Tips for Extending Battery Lifespan

To maximize the lifespan of your MacBook Air battery, it is recommended to:

1. Maintain charge levels between 20-80%.
2. Work on AC power when possible to preserve charge cycles.
3. Avoid device overheating.
4. Prevent complete battery discharge.
5. Periodically calibrate the battery.

These simple guidelines will help preserve battery capacity for years to come, delaying the need for replacement.

Optimizing MacBook Settings for Maximum Battery Lifespan

Software settings on macOS significantly impact power consumption and battery longevity. Low-Power Mode in macOS Monterey reduces display brightness and limits processor performance, substantially extending battery life.

• Optimized Battery Charging slows charging beyond 80%, reducing battery wear.
• Monitor battery health through “About This Mac” → “System Report” → “Power”.
• Automatic display brightness reduction saves up to 25% of battery charge.

Disabling Wi-Fi and Bluetooth when not in use adds up to 30 minutes of battery life. Applications like coconutBattery or Battery Health help track battery degradation, providing data on cycles and current capacity.

Proper system settings and responsible MacBook usage habits significantly extend the lifespan of both original and third-party batteries.

Conclusion

Choosing between an original battery and a third-party alternative is a balance of price, quality, and reliability. Apple’s original batteries provide maximum compatibility and performance, albeit at a higher cost. Quality alternatives can offer good value for money but require careful manufacturer selection.

Regardless of choice, proper battery care is critical for extending its service life. Following usage recommendations will help maintain battery capacity and delay the need for replacement.

Ultimately, investing in a quality battery and its proper use is key to long and productive MacBook Air operation.