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Small square lithium-ion watch battery, light grey finish, thin profile, gold connector visible

Cameron Sino 300mAh 3.7V Battery Garmin Fenix 1 2 PD3555w 361-00061-00

SKU CH-42WX-27Q70

Replacement lithium-ion cell restores 300 mAh at 3.7 V for Garmin Fenix 1, Fenix 2 and PD3555w smartwatches

  • Battery pack size34.1 × 34 × 4.1
  • Battery capacity300 mAh
  • Battery voltage rating3.7 V
  • Details34.1 × 34 × 4.1
  • Direct replacement for Garmin Fenix 1, Fenix 2 and PD3555w
  • 300 mAh capacity at 3.7 V restores original runtime
  • Certified to ISO 9001, RoHS and CE safety standards
  • 10 x 34.00 x 4.10 mm form factor matches factory dimensions
  • Built-in protection against overcharge, over-discharge and short circuit

What this battery replaces

This Cameron Sino cell is a direct replacement for the Garmin Fenix 1, Fenix 2 and PD3555w smartwatches. It matches the original part number 361-00061-00 and delivers a 300 mAh capacity at 3.7 volts. The lithium-ion pack measures 34.10 x 34.00 x 4.10 mm and weighs 7.8 g. A built-in protection circuit guards against overcharge, over-discharge and short circuits.

Who should buy it and who should not

Owners of a Fenix 1, Fenix 2 or PD3555w whose original battery no longer holds a charge will restore normal runtime with this unit. It is not for users of other Garmin models or any non-Garmin wearables, because the connector and dimensions are specific to the listed devices. Buyers who need a higher-capacity cell or a different voltage should look elsewhere.

Installing in your watch

The pack fits inside the existing watch case using the original connector, so no soldering or adapter is required. Installation videos are widely available online and the process typically takes a few minutes. After fitting, allow two or three full charge and discharge cycles for the battery to reach its rated 1.11 Wh performance. The included foam padding protects the cell during shipping.

How it compares

Measured against everything we stock in Household Batteries & Chargers, at today’s prices. Recalculated every night.

Price $14.99
Pricier than about 67% of the 10,440 comparable items (median $10.99).

Specifications

Product
Brand nameCameron Sino
Model nameFenix 1, Fenix 2, PD3555w
Part number361-00061-00
Power
Battery capacity300 mAh
Battery voltage rating3.7 V
In the box
Battery pack size34.1 × 34 × 4.1

Questions about this item

Which Garmin watches does this 300mAh 3.7V battery replace?

It replaces the original battery in Garmin Fenix 1, Fenix 2 and PD3555w models when the part number matches 361-00061-00.

Will the battery fit if my original cell measures 34.10 x 34.00 x 4.10 mm?

Yes, the replacement shares those exact dimensions and weighs 7.8g so it seats in the same compartment.

How can I confirm the new battery is working after installation?

The watch should power on, hold a charge through several cycles and show normal battery-life indicators once the decoded chip syncs.

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