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Sony 379 (SR521SW) Silver Oxide Button Battery

Model Number: SR521SW
Web Code: 12243094

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Sony 379 (SR521SW) Silver Oxide Button Battery.

Available online only

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Sony 379 (SR521SW) Silver Oxide Button Battery.


Chemistry: Silver Oxide

Voltage: 1.55 Volts

Dimensions: 7.9 mm x 2.6 mm

Brand: Sony

Made in Japan

QTY: 1

Ideal for the following applications:

Laser pointers



Alarm transmitter

Rescue heroes

Children Books


Blood Pressure Instrument

Sugar Level Detectors

Many Others

Equivalent Batteries

379, 379L, D 379, D379, V379

379, SP379

SG-521S, SR 521 SW, SR521, SR521SW, LR521

SR 63, SR63

1191SO, 280-59, 618, JA

RW 327, SB-AC/DC

Battery Shape
1.55 V
Battery Type
1 x 379

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Shipping Cost

Seller offers free standard shipping on all orders above $35 for Ground Regular Shipments

Seller offers free shipping on all orders above $45 for Ground Express Shipments

**In the event that product is unavailable, you will be refunded within 48 business hours.

Returns can be made within 30 days of receiving your order.

Premium Batteries Restocking Fees / Return Eligibility
Category Return Period Un-opened Opened/Unused Opened/Used
All products 30 Days 0% Not Returnable Not Returnable

All returned products must include original packaging.

Return shipping costs will be paid by the seller for all cases where the product is defective, damaged or incorrect. For other cases (e.g. you changed your mind), you will be responsible for this cost.

To request a return

Please contact the seller directly from your Order details page, and provide the following information:

  • Web ID (8-digit number) & product description
  • Number of items to be returned
  • Date you received your product
  • Condition of product
  • Condition of packaging
  • Reason for return

All refunds will be processed within 4 Business Days.