Sale price$1.19




Maxell is the first company in Japan to successfully market button-type silver oxide batteries and has many years of experience and know-how. Button-type silver oxide batteries such as this 329 battery are characterized by high-energy per unit volume and stable operating voltage. As a result, they are used as a power source for applications such as quartz watches, and in recent years their use has expanded to medical devices and BLE devices. This Maxell battery is ideal for 329 battery replacement.

Maxell 329 battery equivalent: 329, 329(24), V329(525), SR731SW

Maxell 329 SR731SW battery works in: watches, computers, keyless entry devices, calculators, hearing aid devices, garage door openers, toys, games, door chimes, pet collars, LED lights, sporting goods, pedometers, calorie counters, stopwatches, industrial, medical and electronic devices.


  • Twice the capacity as alkaline button-type batteries for longer-lasting power
  • Flat discharge current keeps your battery's voltage through its lifecycle
  • Mercury-free formula is better for the environment
  • Leakage resistance prevents damage to your watch or other specialty electronic
  • 5-year manufacturer's warranty brings peace of mind
  • Equivalent Battery Types: Energizer 329, Duracell D329, Renata 329, 24, Varta V329, V525, Rayovac 329, Sony SR731SW, Maxell SR731, SR 731, 363, RW300, RW-300, SR730SW


  • Battery Size: 329 / SR731SW
  • Battery Chemistry: Silver Oxide
  • Nominal Voltage: 1.55V
  • Nominal Capacity: 36mAh
  • Nominal Discharge Current: 50μA
  • Dimensions:
    • Length - 0.122" (3.1 mm)
    • Diameter - 0.311" (7.9 mm)
  • Weight: 0.025 oz. (0.7 g)

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