2-power Main Battery Pack - Akku - 61 mAh (2P-W5W19)

When your Apple Watch Series 1 38mm can no longer hold a charge through a full day of notifications, workouts, and music controls, it’s time to restore its original stamina. The 2-Power 2P-W5W19 replacement battery is built for DIY repair enthusiasts, professional watch technicians, and anyone who wants to extend the life of their smartwatch without replacing the entire device. This 61 mAh lithium-ion polymer cell delivers the same voltage and energy profile as the original battery, ensuring your watch powers on reliably and tracks your activity from morning to night.

Key specifications

• Battery type: Lithium-ion Polymer (Li-ion Polymer)
• Capacity: 61 mAh
• Voltage: 3.7 V
• Energy: 0.22 Wh
• Compatibility: Apple Watch Series 1 38mm
• Rechargeable: Yes
• Product type: Replacement battery
• Application: Smartwatch
• Installation: Internal
• Number of cells: 1
• Protection: Overcharge, short-circuit, over-discharge
• Operating temperature: 0°C to 45°C
• Storage temperature: -20°C to 60°C
• Certifications: CE, RoHS
• Expected cycle life: 500 cycles to 80% capacity
• Warranty: 1 year
• Colour: Black

Why choose it

This battery is manufactured to meet or exceed original specifications, providing a dependable power source that brings your Apple Watch back to life. The built-in protection circuit guards against common battery failures, while the Li-ion polymer chemistry offers a stable discharge curve for consistent performance. With a 1-year warranty and rigorous testing, you can trust this cell to keep your watch running smoothly through daily use.

Ideal use cases

• Reviving an Apple Watch Series 1 38mm with a degraded battery
• Professional repair shops offering smartwatch battery replacement services
• DIY enthusiasts comfortable with opening their device and swapping the cell
• Extending the lifespan of a beloved smartwatch instead of buying a new one

Good to know

Installation requires opening the watch case and may void any remaining manufacturer warranty. We recommend using proper tools and following a reliable guide. The battery is black in colour and fits internally, so it will not alter the appearance of your device. Store the battery in a cool, dry place if not installing immediately.