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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Description Price Model Number Size Chemistry Nominal Voltage Capacity Terminal Type Diameter Dimensions
RS Stock No. 593-423
BrandRS PRO
$4.284
Each (In a Pack of 5)
units
- SR44 Silver Oxide 1.55V 165mAh Standard 11.6mm 11.6 x 5.4mm
RS Stock No. 775-7233
BrandRS PRO
$1.614
Each (In a Pack of 5)
units
- LR44 Alkaline 1.5V 158mAh Standard 11.53mm 11.53 x 5.43mm
RS Stock No. 593-401
BrandRS PRO
$1.77
Each (In a Pack of 5)
units
- SR41 Silver Oxide 1.55V 42mAh Standard 7.9mm 7.9 x 3.6mm
RS Stock No. 514-7766
BrandRS PRO
$1.964
Each (In a Pack of 5)
units
- SR66 Silver Oxide 1.55V 25mAh Standard 6.8mm 6.8 x 2.6mm
RS Stock No. 801-0730
BrandRS PRO
$1.497
Each (In a Pack of 6)
units
- PR44 Zinc Air 1.4V 300mAh Standard 11.6mm 11.6 x 5.4mm
RS Stock No. 593-439
BrandRS PRO
$2.566
Each (In a Pack of 5)
units
- SR54 Silver Oxide 1.55V 70mAh Standard 11.6mm 11.6 x 3.05mm
RS Stock No. 494-2396
BrandRS PRO
$1.994
Each (In a Pack of 5)
units
- SR63 Silver Oxide 1.55V 14mAh Standard 5.8mm 5.8 x 2.15mm
RS Stock No. 514-7700
BrandRS PRO
$3.95
Each (In a Pack of 5)
units
- SR43 Silver Oxide 1.55V 120mAh Standard 11.6mm 11.6 x 4.2mm
RS Stock No. 514-7750
BrandRS PRO
$2.328
Each (In a Pack of 5)
units
- SR60 Silver Oxide 1.55V 18mAh Standard 6.8mm 6.8 x 2.15mm
RS Stock No. 595-637
BrandRS PRO
$2.73
Each (In a Pack of 5)
units
- SR48 Silver Oxide 1.55V 70mAh Standard 7.9mm 7.9 x 5.4mm
RS Stock No. 801-0721
BrandRS PRO
$1.353
Each (In a Pack of 6)
units
- PR41 Zinc Air 1.4V 175mAh Standard 7.9mm 7.9 x 3.6mm
RS Stock No. 514-7722
BrandRS PRO
$1.068
Each (In a Pack of 5)
units
- SR58 Silver Oxide 1.55V 24mAh Standard 7.9mm 7.9 x 2.1mm
RS Stock No. 494-2374
BrandRS PRO
$3.068
Each (In a Pack of 5)
units
- SR69 Silver Oxide 1.55V 44mAh Standard 9.5mm 9.5 x 2.1mm
RS Stock No. 514-7744
BrandRS PRO
$1.046
Each (In a Pack of 5)
units
- SR59 Silver Oxide 1.55V 30mAh Standard 7.9mm 7.9 x 2.65mm
RS Stock No. 595-659
BrandRS PRO
$2.896
Each (In a Pack of 5)
units
- SR55 Silver Oxide 1.55V 40mAh Standard 11.6mm 11.6 x 2.1mm
RS Stock No. 801-0733
BrandRS PRO
$1.277
Each (In a Pack of 6)
units
- PR70 Zinc Air 1.4V 100mAh Standard 5.8mm 5.8 x 3.6mm
RS Stock No. 494-2403
BrandRS PRO
$2.998
Each (In a Pack of 5)
units
- SR57 Silver Oxide 1.55V 55mAh Standard 9.5mm 9.5 x 2.7mm
RS Stock No. 866-0663
BrandRS PRO
$0.768
Each (In a Pack of 5)
units
- CR2025 Lithium Manganese Dioxide 3V 160mAh Standard 20mm 20 x 2.5mm
RS Stock No. 801-0727
BrandRS PRO
$1.468
Each (In a Pack of 6)
units
- PR48 Zinc Air 1.4V 95mAh Standard 7.9mm 7.9 x 5.4mm
RS Stock No. 514-7716
BrandRS PRO
$3.45
Each (In a Pack of 5)
units
- SR45 Silver Oxide 1.55V 60mAh Standard 9.5mm 9.5 x 3.6mm
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