Li-ion Battery for Apple Watch Series 6 44mm

The Apple Watch Series 6 44mm Replacement Battery (Model A2327 / 303.8mAh) is a high-grade Lithium-ion battery cell designed to replace degraded, worn, or swollen original batteries in the 44mm Apple Watch Series 6.  

With daily charge cycles, internal watch batteries gradually lose charge capacity, resulting in rapid percentage drops, power-offs during workouts, or sluggish watchOS performance. Installing this factory-spec replacement cell restores reliable battery runtime and consistent everyday operation.  

Key Features

• Factory-Grade 303.8mAh Capacity: Built to match exact original specifications ($3.85\text{V}$, $1.17\text{Wh}$) for reliable, long-lasting daily power.  

• Integrated Safety Circuitry: Features a built-in protection IC to guard against over-charging, short circuits, overheating, and excessive voltage draw.  

• Solves Battery Degradation: Corrects low battery health warnings, sudden power loss, or failure to accept charge on magnetic charging pucks.

Compatibility

• Apple Watch Series 6 – 44mm

  • Model Numbers: A2292 / A2294 / A2376 (GPS & Cellular variants)  

• Battery Model Number: A2327  

(Note: Not compatible with 40mm Series 6 models, or older/newer Series 5/7/8/9/SE/Ultra).

Technical Specifications

• Battery Model: A2327  

• Capacity: 303.8 mAh  

• Energy: 1.17 Wh  

• Nominal Voltage: 3.85 V  

• Chemistry: Lithium-ion (Li-ion) / Polymer  

• Condition: Brand New

Note for Technicians: Replacing an Apple Watch Series 6 battery requires precision heating tools to soften water-resistant display adhesives, micro-spudgers to safely disconnect delicate flex ribbons, and replacement frame adhesive tape upon reassembly. Always perform 2–3 full charge and discharge cycles after installation to properly calibrate the battery level indicator.