30% off all items on the site, 30 days money back, 1 year warranty

What Are You Looking For?

Your Cart

Your Shopping Cart is Empty!

SEIKO 5J21 Battery Replacement

Power up your device with the Seiko 5J21 battery — engineered for compatibility, performance, and long-lasting reliability. Batteryshop.org.uk offers a wide range of trusted battery models to keep your gear running smoothly.

Battery MT920 3023-24X 5J21 Compatible with Seiko Kinetic Watch Capacitor 5J21 5J22 5J32 5S21 7D46 7D48 7D56

Click image to open expanded view

Price: £26.99 £38.56
  • Model: 5J21
  • SKU: ECN12764_Oth
  • Availability: In Stock
  • Capacity:
  • Voltage:
  • Type: Coin Cell
  • Color: White
  • Our batteries are 100% new and CE / FCC / RoHS certified for safety
  • We only use high quality materials and grade A cells to guarantee real capacity and higher recharge cycles.
  • Quick, friendly and hassle-free customer support and a full one-year warranty: if something goes wrong, we are at your disposal.
Quantity:
- +
Guarantee safe & Secure checkout
  • Free shipping apply to all
    orders over £ 9.9

  • Paypal guarantees 100%
    payment security

  • 30 days returns if you change
    your mind

Related Products

WX30
-30%
MOTOROLA

WX30 for Motorola Moto 360 1st Gen 2014 SNN5951A

£35.49 £50.70
Availability : In Stock
  • Capacity: 300mAh
  • Voltage: 3.8V
HB512627ECW+
-30%
HUAWEI

HB512627ECW+ for Huawei WATCH GT 1 FTN-B19 46MM

£20.88 £29.83
Availability : In Stock
  • Capacity: 420mAh
  • Voltage: 3.82V
MT920 295-34 295-3400 7820A
-30%
  • Capacity:
  • Voltage:
BW-A2
-30%
VIVO

BW-A2 for Vivo smart watch

£22.38 £31.97
Availability : In Stock
  • Capacity: 458mAh/1.76WH
  • Voltage: 3.85V
LSS271621
-30%
FITBIT

LSS271621 for Fitbit Charge3 FB409 Smart Watch

£21.00 £30.00
Availability : In Stock
  • Capacity: 71mAh/0.273Wh
  • Voltage: 3.85V
LSS271617
-30%
FITBIT

LSS271617 for Fitbit Charge 5 FB421 Smartwatch

£22.99 £32.84
Availability : In Stock
  • Capacity: 65mAh
  • Voltage: 3.87V
GY96V
-30%
GOOGLE

GY96V for Google Pixel Watch3 45mm

£19.99 £28.56
Availability : In Stock
  • Capacity: 412mAh/1.6Wh
  • Voltage: 3.88V
PL362332
-30%
HUAMI

PL362332 for HUAMI Bip 6 A2345

£17.88 £25.54
Availability : In Stock
  • Capacity: 340mAh/1.32Wh
  • Voltage: 3.87V
1S1P-PP332727AE
-30%
TOMTOM

1S1P-PP332727AE for TomTom spark cardio music

£28.49 £40.70
Availability : In Stock
  • Capacity: 260mAh
  • Voltage: 3.8V
CITIZEN 295-3800
-30%
CITIZEN

CITIZEN 295-3800 for Citizen 295-3800

£24.99 £35.70
Availability : In Stock
  • Capacity: mAh/Wh
  • Voltage: V

Fast Delivery

Shipping to Most Countries

safe payment

Paypal Secure Payment

Online Discount

30% Off All Batteries

Help Center

Contact Our Customer Service

Curated items

From Handpicked Manufacturers