

APPLE | SKU: PUECN11934
A1578 Replacement Battery for Apple Watch Series 1 (38mm) (0.78Whr/205mAh)
If your Apple Watch Series 1 (38mm) is no longer holding a charge as well as it used to, or if it is swelling, it may be time to replace the battery. This battery is a great option for restoring your Apple Watch Series 1 (38mm) to its original performance.
Easy 30 Day Return Policy
12-Month Warranty
Secure online payments
- 0.78Whr/205mAh
- 3.8V/4.35V
- Li-ion
- A1578
- Apple Watch Series 1 (38mm)
Apple Watch Series 1 (38mm) — 3.8V/4.35V Li-ion Replacement Battery (A1578)
If your Apple Watch Series 1 (38mm) is draining fast or barely lasting half a
day, this high-quality A1578 replacement battery brings
back the power you're used to.
Built-in protection against overcharging and short circuits
Matches original voltage and capacity specifications
Backed by a 12-month warranty
Replaces the following parts
A1578
Compatible with the Following Devices
Apple Watch Series 1 (38mm)
Compatibility Note: Please check your original Battery model before ordering. Professional installation recommended.
What's in the Box
1x high-quality replacement battery for Apple Watch Series 1 (38mm) (A1578, 0.78Whr/205mAh )
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Apple Watch Series 1 (38mm) Battery Specifications:
| Condition | New |
| Capacity | 0.78Whr/205mAh |
| Voltage | 3.8V/4.35V |
| Battery Type | Li-ion |
| Model: | A1578 |
| Compatibility: | Apple Watch Series 1 (38mm) |
| Certifications | CE, RoHS, UL |
| Protection Functions | Overcharge, Deep Discharge, Overvoltage, Overcurrent, Short Circuit |
| Warranty | 12 Months |
Upgrade your Apple Watch Series 1 (38mm) with a high-quality replacement Battery and enjoy improved performance and longer usage time.
Battery Care Tips
Getting Started
Charge your new battery fully before you use it for the first time. Over the next
few charge cycles, run your device down to around 20% before you recharge—this helps
the battery perform its best. After that, charge whenever you need to.
Keep It Healthy
Avoid letting your battery completely drain or staying plugged in constantly. Both
extremes wear it out faster. Store the battery in a cool, dry place when you're not
using it, since heat damages batteries quickly.
Shipping policy
We strive to ensure that your order arrives quickly, safely, and on time.
Free Worldwide Shipping
We offer FREE shipping on all orders.
Processing Times
Orders are generally processed and shipped from our facility within 1-2 business day (excluding weekends and holidays).
Delivery Times
Once shipped, orders typically arrive within 7–15 business days within the contiguous United States, depending on the shipping method and destination.
Please note: These are estimated delivery times. Actual delivery may be affected by customs clearance, weather, or other unforeseen circumstances. We appreciate your patience and understanding.
Tracking Information
When your order has shipped, you will receive an email informing you of your package being shipped along with a tracking number. If for any reason you don't receive this or for more shipping information, please contact us along with your order number.
Please note, tracking can take around 24---48 hours to update after dispatch.
Important Information
We are not responsible for incorrect addresses entered by the customer.
Payment policy
My Battery Parts accepts payments by any of the following methods:
Visa, MasterCard, American Express, and Discover Credit and Debit Cards, Google Pay and PayPal.