Energizer SR66 Button Battery, 1.55V, 6.8mm Diameter

View all Button Batteries

Subtotal (1 pack of 10 units)*

£8.70

(exc. VAT)

£10.44

(inc. VAT)

Add to Basket
Select or type quantity
In Stock
  • 74 unit(s) ready to ship
  • Plus 999,999,925 unit(s) shipping from 04 November 2025
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Pack(s)
Per Pack
Per unit*
1 +£8.70£0.87

*price indicative

Three packages of batteries displayed on a light peach background with a red round.
New Batteries, Maximum Power
Discover the new Duracell battery range—engineered for long-lasting performance, extended storage life, and intense power for high-drain devices. Power you can rely on, whenever you need it.
Shop New Batteries
RS Stock No.:
683-365
Mfr. Part No.:
7638900253023
Brand:
Energizer
Find similar products by selecting one or more attributes.
Select all

Brand

Energizer

Size

SR66

Chemistry

Silver Oxide

Nominal Voltage

1.55V

Capacity

24mAh

Terminal Type

Flat Contact

Diameter

6.8mm

RoHS Status: Exempt

COO (Country of Origin):
JP
The Energizer watch battery designated ANSI/NEDA-1176SO and IEC-SR66, utilizes a silver oxide (Zn/Ag₂O) chemical system with a nominal voltage of 1.55 volts and a typical capacity of 24 mAh, tested at a 47K ohm continuous drain at 21°C. It is lightweight at 0.42 grams and compact, with a volume of 0.09 cubic centimetres. Featuring an impedance range of 15 to 30 ohms at 40 Hz, this battery provides reliable, efficient power suited for precision timepieces.

Equivalent mercury containing battery range
Long shelf life so they are always ready when you need them
They have been extensively tested so you will never be disappointed