MacBook Battery A2519 (14" A2442 A2779, 2021) – 11.4V 66.12Wh 5800mAh A+ Grade Replacement Battery

Product Parameters:

Key Selling Points:

• ✅ Designed for MacBook Pro 14" (A2442 / A2779, 2021)
  100% fit with original MacBook design and connector layout.

• ✅ High-Capacity Performance – 5800mAh / 66.12Wh
  Offers extended battery life for power users and professionals.

• ✅ Premium A+ Cells
  Stable voltage output and reduced wear even after heavy use.

• ✅ OEM-Level Compatibility
  Integrates seamlessly with macOS battery management system.

• ✅ Certified Safety
  CE, FCC, and RoHS compliant with smart IC protection.

• ✅ Eco-Conscious Build
  Low environmental impact and high energy efficiency.

• ✅ 12-Month Warranty + Support
  Trusted service and warranty for full peace of mind.

Product Advantages:

• Full Compatibility Without Errors:
  No "Service Battery" warnings or macOS compatibility issues.

• Long Cycle Life:
  Delivers over 1000 charge cycles—twice as long as cheap alternatives.

• Advanced Power Management Chip:
  Ensures consistent charging and discharging behavior.

• Quiet, Cool, and Efficient:
  Designed to minimize heat and power waste.

• Ideal for Everyday and Professional Use:
  Supports video editing, multitasking, development, and more.

Frequently Asked Questions (FAQ):

Q1: Which MacBook models are compatible with this A2519 battery?
A: This battery is compatible with MacBook Pro 14-inch models A2442 and A2779 released in 2021.

Q2: Will this battery show up properly in macOS?
A: Yes, it integrates seamlessly with macOS Battery Health Management and system diagnostics.

Q3: What tools or skills are needed for installation?
A: Intermediate skills are required. We recommend professional installation or using detailed online guides with proper tools.

Q4: How do I confirm my MacBook model number?
A: Click the Apple logo > “About This Mac” > check for the model identifier (e.g., A2442 or A2779).

Q5: How long can I expect the battery to last per charge?
A: With 5800mAh capacity, it can last 8–10+ hours under normal usage, depending on workload and settings.

Q6: Do you offer bulk orders or reseller pricing?
A: Yes, contact our support team for wholesale discounts and reseller partnerships.

Founded in 2005, Shenzhen Chunyilin Technology Co., Ltd. is a comprehensive foreign trade enterprise specializing in the sales and repair services of laptop LCD screens. With two decades of experience, Chunyilin has grown into one of China's key service hubs for notebook maintenance, offering integrated solutions that combine high-quality products with dependable technical support.

Since its inception, Chunyilin has operated under the guiding principle of "Technology with a Human Touch," emphasizing information-driven strategy and customer-centric innovation. We continuously strive to enhance our competitiveness by leveraging advancements in technology while focusing on innovation in services, product quality, and operational efficiency.

Our company is committed to building a platform that promotes lifelong learning, continuous improvement, and professional excellence. Through a culture of dedication and innovation, we aim to deliver cost-effective, high-quality solutions that meet the diverse needs of global markets. Sustainability and talent development are embedded in our mission—creating long-term value for both our customers and the broader community.

As we step into a new era, Chunyilin remains focused on its four-fold mission: embracing the future, fostering innovation, prioritizing customer satisfaction, and nurturing meaningful service relationships. Guided by the core values of "Unity, Dedication, Innovation, and Warm-hearted Service," we will continue to uphold our commitment to integrity, strength, and superior service, striving to reach new heights in the global laptop maintenance and LCD screen supply industry.