Replace a dead or damaged battery for the 38 mm Original or Series 1 Apple Watch with this part.
- For optimal performance, calibrate your newly installed battery: Drain battery below 10%, then charge uninterrupted to 100%.
- This new replacement battery will only fit in the 38 mm Original or Series 1 Apple Watch.
- Battery adhesive is not included.
Warning: Lithium-ion batteries pose a fire hazard if they begin to swell due to age or defect. Learn more about how to safely handle a battery that may be swollen.
- Apple Watch 38 mm Original (1st Generation) and Series 1
- Models A1553 and A1802
- Excludes Series 2 and Later Models
Apple Part #: A1578
Voltage: 3.8 V
Capacity: 205 mAh
We offer you the lifetime iFixit warranty on many products. All information on our warranty conditions can be found here.