Apple Watch (40 mm Series 4) Battery

Replace a dead or damaged battery in a 40 mm Series 4 Apple Watch.

For optimal performance, calibrate your newly installed battery: Charge it to 100% and keep charging it for at least 2 more hours. Then use your device until it shuts off due to low battery. Finally, charge it uninterrupted to 100%.

Learn more about safe lithium-ion battery handling and proper disposal.

Specifications

• Battery Model:A2058
• Watt Hours:0.858 Wh
• Voltage:3.81 V
• Milliamp Hours:224.9 mAh

Compatibility

Apple Watch Series 4

• 40 mm Cell Global Model A2007
• 40 mm Cell US/CA Model A1975
• 40 mm GPS Only Model A1977