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Small rectangular lithium polymer battery with gold contacts and printed labels

Cameron Sino 300mAh 1.11Wh Battery for Galaxy Gear S2 3G SM-R730 SM-R735 PN EB-BR730ABE GH43-04538B

SKU CH-076T-FFAZF

300 mAh lithium-polymer cell restores power to Galaxy Gear S2 3G smartwatches

  • Total capacity300 mAh / 1.11 Wh
  • Product typeAaa
  • Product weight33
  • Ready for Galaxy Gear S2 3G models SM-R730 and SM-R735
  • 300 mAh capacity restores original runtime
  • 7 V lithium-polymer cell matches factory voltage
  • 35 × 19.90 × 5.00 mm size fits the watch cavity
  • Built-in protection guards against over-charge and short circuits

Compatible Models

This replacement battery fits the Galaxy Gear S2 3G series including SM-R730, SM-R730A, SM-R730S, SM-R730T, SM-R730V and SM-R735 smartwatches. It matches part numbers EB-BR730ABE and GH43-04538B for direct compatibility. The fully decoded chip works like the original unit.

Upgrade From Degraded Original

It replaces a worn or failing factory battery that no longer holds a useful charge. The jump is worth it when daily runtime drops below a full day or the watch shuts down unexpectedly. A new cell restores the intended 300mAh capacity and 3.7V output.

Capacity And Limits

The 300mAh / 1.11Wh lithium polymer cell provides enough energy for typical smartwatch use including notifications, sensors and Bluetooth connectivity. It runs out during continuous GPS tracking, heavy LTE data or always-on display modes. The protection circuit guards against overcharge, over-discharge, over-voltage and short circuits.

How it compares

Measured against everything we stock in Replacement Phone Batteries, at today’s prices. Recalculated every night.

Price $12.99
Cheaper than about 70% of the 868 comparable items (median $14.99).

Specifications

Product
Brand nameCameron Sino
Product line31.35 × 19.9 × 5 mm
Model nameGalaxy Gear S2 3G, Gear S2 3G, SM-R730, SM-R730A, SM-R730S, SM-R730T, SM-R730 V, SM-R735
Part numberEB-BR730ABE, GH43-04538B
Total capacity300 mAh / 1.11 Wh
Product typeAaa

Questions about this item

What are the exact dimensions I need to fit the 31.35 x 19.90 x 5.00 mm battery into my Gear S2 3G?

The cell measures 31.35 mm long, 19.90 mm wide and 5.00 mm thick, matching the original EB-BR730ABE housing.

Which step do installers most often miss when connecting the replacement cell?

Fully seating the flex connector until it clicks; a loose connection prevents the watch from powering on.

How often should I replace the lithium‑polymer cell in normal daily use?

Typical lifespan is two to three years; a fresh unit reaches full capacity after two or three complete charge cycles.

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