Apple Watch - Series 4
40 mm Cell Global Model A2007
40 mm Cell US/CA Model A1975
40 mm GPS Only Model A1977
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Condition: New
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Join iFixit ProReplace 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.
| Battery Model # | A2058 |
|---|---|
| Watt Hours | 0.858 Wh |
| Voltage | 3.81 V |
| Milliamp Hours | 224.9 mAh |
| iFixit Part Number | IF409-007-1 |
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