Button Batteries

Button batteries, also referred to as coin cells, coin batteries or button cells are circular non-rechargeable batteries. They are used to power electronic devices.

Sizes:
The most common naming standard is from the International Electrotechnical Commission or IEC. This typically consists of 2 letters, followed by 3 or 4 numbers.

The first letter defines the chemisty:
L – Alkaline manganese dioxide
S – Silver oxide
P – Zinc-air
C – Lithium manganese dioxide
B – Lithium carbon monofluoride
G – Lithium copper oxide

The second letter defines the shape:
R – Round
F – Flat
S – Square
P – All others that aren’t defined as round, flat or square.

The numbers that follow the letters reference the diameter and the height. If the number ends with 1025, the battery has a 10 mm diameter and a 2.5 mm height.

Applications:
Due to their size, button batteries are used for smaller electronic devices. Standard domestic applications include watches, scales, remote controls and calculators. They can be found in greeting cards, and are used to power small LEDs or speakers within the card.

Coin batteries can also be used to power medical devices such as hearing aids, implantable defibrillators and pacemakers.


Which battery?
Coin batteries have a very long shelf life. They have low levels of self-discharge which means they are able to hold their charge for a long time without losing any power. Coin cells are constructed with 1 of 3 types of battery chemistry. This can help you to choose the most suitable battery for your application.

Alkaline button batteries:
These are an economic solution as they are cheaper than lithium or silver oxide batteries. They do not maintain constant voltage throughout their lifespan like other batteries do. This means that the voltage drops consistently and they typically last half as long as lithium or silver oxide batteries. They have less capacity than silver oxide and lithium batteries.

Silver oxide and lithium button batteries:
Lithium and silver oxide coin batteries have stable voltage throughout their lifespan. Unlike alkaline batteries, they are subject to a drop in voltage quite suddenly as they approach end of life. They are more resistant to corrosion and have better leakage resistance. The main difference between silver oxide and lithium batteries is the voltage. Lithium batteries provide voltage of 3 V while silver oxide batteries offer 1.5 V.

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Viewing 1 - 20 of 25 products
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Description Price Model Number Size IEC Name Chemistry Nominal Voltage Capacity Terminal Type Diameter Dimensions Series
New
RS Stock No. 188-1990
Mfr. Part No.20394903501
BrandVarta
£1.072
Each (In a Pack of 1000)
Units
20394 SR936 - NaOH Electrolyte, Silver Oxide, Zinc 1.55V 58mAh - 9.5mm 9.5 Dia. x 3.6mm V MF
New
RS Stock No. 188-2131
Mfr. Part No.20395903501
BrandVarta
£0.916
Each (In a Pack of 5)
Units
20395 SR57 - NaOH Electrolyte, Silver Oxide, Zinc 1.55V 38mAh - 9.5mm 9.5 Dia. x 2.7mm V MF
New
RS Stock No. 188-1991
Mfr. Part No.20395903501
BrandVarta
£0.824
Each (In a Pack of 1000)
Units
20395 SR57 - NaOH Electrolyte, Silver Oxide, Zinc 1.55V 38mAh - 9.5mm 9.5 Dia. x 2.7mm V MF
New
RS Stock No. 188-2133
Mfr. Part No.6430401501
BrandVarta
£2.44
Each
Units
6430 CR2430 - Lithium Manganese Dioxide, Organic Electrolyte 3V 280mAh - 24.5mm 24.5 Dia. x 3mm CR
New
RS Stock No. 188-1985
Mfr. Part No.20379903501
BrandVarta
£0.649
Each (In a Pack of 1000)
Units
20379 SR63 - NaOH Electrolyte, Silver Oxide, Zinc 1.55V 15mAh - 5.8mm 5.8 Dia. x 2.15mm V MF
New
RS Stock No. 188-2127
Mfr. Part No.20394903501
BrandVarta
£1.128
Each (In a Pack of 5)
Units
20394 SR936 - NaOH Electrolyte, Silver Oxide, Zinc 1.55V 58mAh - 9.5mm 9.5 Dia. x 3.6mm V MF
New
RS Stock No. 188-2136
Mfr. Part No.20321903501
BrandVarta
£0.73
Each (In a Pack of 5)
Units
20321 SR65 - NaOH Electrolyte, Silver Oxide, Zinc 1.55V 14.5mAh - 6.8mm 6.8 Dia. x 1.65mm V MF
New
RS Stock No. 188-1978
Mfr. Part No.6032201501
BrandVarta
£1.698
Each (In a Pack of 480)
Units
6032 CR2032 - Lithium Manganese Dioxide, Organic Electrolyte 3V 230mAh - 20mm 20 Dia. x 3.2mm CR
New
RS Stock No. 188-2115
Mfr. Part No.20373903501
BrandVarta
£0.988
Each (In a Pack of 5)
Units
20373 SR68 - NaOH Electrolyte, Silver Oxide, Zinc 1.55V 28mAh - 9.5mm 9.5 Dia. x 1.65mm V MF
New
RS Stock No. 188-1986
Mfr. Part No.20384903501
BrandVarta
£0.855
Each (In a Pack of 1000)
Units
20384 SR41 - NaOH Electrolyte, Silver Oxide, Zinc 1.55V 37mAh - 7.9mm 7.9 Dia. x 3.6mm V MF
New
RS Stock No. 188-1981
Mfr. Part No.20321903501
BrandVarta
£0.693
Each (In a Pack of 1000)
Units
20321 SR65 - NaOH Electrolyte, Silver Oxide, Zinc 1.55V 14.5mAh - 6.8mm 6.8 Dia. x 1.65mm V MF
New
RS Stock No. 188-2119
Mfr. Part No.20384903501
BrandVarta
£0.896
Each (In a Pack of 5)
Units
20384 SR41 - NaOH Electrolyte, Silver Oxide, Zinc 1.55V 37mAh - 7.9mm 7.9 Dia. x 3.6mm V MF
New
RS Stock No. 188-1988
Mfr. Part No.20393903501
BrandVarta
£0.918
Each (In a Pack of 500)
Units
20393 SR48 - KOH Electrolyte, Silver Oxide, Zinc 1.55V 77mAh - 7.9mm 7.9 Dia. x 5.4mm V MF
New
RS Stock No. 188-2129
Mfr. Part No.6430101501
BrandVarta
£1.94
Each
Units
6430 CR2430 - Lithium Manganese Dioxide, Organic Electrolyte 3V 300mAh - 24.5mm 24.5 Dia. x 3mm CR
New
RS Stock No. 188-1984
Mfr. Part No.20373903501
BrandVarta
£0.939
Each (In a Pack of 1000)
Units
20373 SR68 - NaOH Electrolyte, Silver Oxide, Zinc 1.55V 28mAh - 9.5mm 9.5 Dia. x 1.65mm V MF
New
RS Stock No. 188-2125
Mfr. Part No.6032201501
BrandVarta
£1.88
Each
Units
6032 CR2032 - Lithium Manganese Dioxide, Organic Electrolyte 3V 230mAh - 20mm 20 Dia. x 3.2mm CR
New
RS Stock No. 188-2113
Mfr. Part No.20361903501
BrandVarta
£0.698
Each (In a Pack of 5)
Units
20361 SR58 - KOH Electrolyte, Silver Oxide, Zinc 1.55V 22mAh - 7.9mm 7.9 Dia. x 2.1mm V MF
New
RS Stock No. 188-1980
Mfr. Part No.6430401501
BrandVarta
£2.318
Each (In a Pack of 25)
Units
6430 CR2430 - Lithium Manganese Dioxide, Organic Electrolyte 3V 280mAh - 24.5mm 24.5 Dia. x 3mm CR
New
RS Stock No. 188-2117
Mfr. Part No.20379903501
BrandVarta
£0.718
Each (In a Pack of 5)
Units
20379 SR63 - NaOH Electrolyte, Silver Oxide, Zinc 1.55V 15mAh - 5.8mm 5.8 Dia. x 2.15mm V MF
New
RS Stock No. 188-1987
Mfr. Part No.20389903501
BrandVarta
£1.265
Each (In a Pack of 1000)
Units
20389 SR54 - KOH Electrolyte, Silver Oxide, Zinc 1.55V 81mAh - 11.6mm 11.6 Dia. x 3.1mm V MF