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Maxell SR521SW 379 16mAh 1.55V Silver Oxide Button Cell Battery - Bulk

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Minimum Order Quantity: 1000 units
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Please Note: Opening orders for these bulk button cell batteries are large and require a minimum order quantity of 1000 units. Please contact us at customerservice@batteryjunction.com for more information.

Maxell SR521SW Button Battery

Bulk Watch Batteries

The Maxel SR521SW button battery is the perfect choice for powering your watch; however, this silver oxide cell is also compatible with some calculators, medical instruments, and measuring tools. Maxell has years of experience within the power source industry and is the first company in Japan to achieve success with button cell silver oxide batteries. This Maxell 379 is sold in bulk for documented US OEM users only.


  • Flat discharge curve supplies stable power.
  • High energy density, when compared with alkaline cells - increases your electronics' runtimes.
  • Superior leakage resistance keeps users safe.
  • Equivalent Battery Types: 379, 379A, 618, AWI S56, B-379L, Citizen 280-59, D379, LR521, SR521, SR521SW, SR63, Seiko SB-AC, Seiko SB-DC, TR521SW, Timex JA, V379


  • Battery Size: SR521SW / 379
  • Battery Chemistry: Silver Oxide
  • Nominal Voltage: 1.55V
  • Nominal Capacity: 13 - 16mAh
  • Max Discharge Current: 20µA
  • Shelf Life: 5 Years
  • Dimensions:
    • Length - 0.085" (2.15 mm)
    • Diameter - 0.228" (5.8 mm)
  • Weight: 0.007 oz. (0.2 g)
Battery Size:379
Battery Capacity (mAh):16
Battery Chemistry:Silver Oxide
Battery Voltage:1.55
Battery Shelf Life:5 Years
Warranty:Battery Junction 30-Day Warranty
Return Policy:Battery Junction Return Policy
Product Weight:0.032oz
Product Dimensions:0.085" (L) x 0.228" (Diameter)
Country of Origin:Japan
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Maxell SR521SW 379 16mAh 1.55V Silver Oxide Button Cell Battery - Bulk

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