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Black rectangular lithium-ion battery 50.00 x 34.00 x 5.50mm for Garmin Edge 305

CameronSino

CameronSino DS-CS-GME305SL 850mAh GPS battery for Garmin Edge 305

SKU CH-1GW1-RZYA3

Replacement lithium-ion cell delivering 850 mAh at 3.7 V for the Garmin Edge 305 GPS unit

  • Product typeGPS Batteries
  • Product dimensions50 × 34 × 5.5 mm
  • Product weight60
  • 850 mAh capacity extends ride tracking time
  • 7 V lithium-ion chemistry matches original power profile
  • 00 x 34.00 x 5.50 mm form factor fits Edge 305 battery bay
  • 60 g weight keeps handlebar balance unchanged
  • Replaces Garmin part 361-00025-00 for direct compatibility

Replacement Battery for Garmin Edge 305

The CameronSino DS-CS-GME305SL is a 3.7 V lithium-ion cell rated at 850 mAh and 3.1 Wh. It matches the original Garmin part number 361-00025-00 and fits the Edge 305 cycling computer. Riders needing a fresh power source for that specific GPS unit will find the correct voltage and connector.

Straightforward Swap for Edge 305 Owners

Installation requires opening the Edge 305 case and disconnecting the old pack before fitting the new cell in the same orientation. The battery measures 50.00 x 34.00 x 5.50 mm and weighs 60 g, so it seats in the original cavity without modification. A common issue is damaging the fragile ribbon cable or losing the tiny screws during reassembly.

Limited to Single-Device Compatibility

This pack only serves the Garmin Edge 305 and cannot power other Edge models or non-Garmin devices. The 3.7 V nominal output and 850 mAh capacity are fixed by the cell chemistry and cannot be increased. Users needing longer runtime or a different form factor must look elsewhere.

How it compares

Measured against everything we stock in GPS Mounts & Accessories, at today’s prices. Recalculated every night.

Price $12.99
Cheaper than about 60% of the 716 comparable items (median $14.99).

Specifications

Product
Brand nameCameron Sino
Model nameDS-CS-GME305SL
Product typeGPS Batteries
Size & build
Product dimensions50 × 34 × 5.5 mm

Questions about this item

How can I confirm the battery is working after installing it in my Edge 305?

The Garmin Edge 305 should power on normally and show a full charge indicator once the 3.7V 850mAh pack is seated correctly.

What comes in the box and is anything else needed for installation?

One black Li-ion cell measuring 50.00 x 34.00 x 5.50 mm is supplied; no extra parts or tools are required to fit it into the Edge 305.

Which capacity should I choose for the Edge 305 — is the 850mAh version the right one?

The 3.7V 850mAh / 3.1Wh specification matches the original 361-00025-00 part, so this is the correct replacement for the Edge 305.

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