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, such as clocks, remote control toys and wristwatches.

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 chemistry:

  • 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 should I use?

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 Diameter Dimensions Series Terminal Type
RS Stock No. 775-7233
BrandRS PRO
PHP40.174
Each (In a Pack of 5)
units
LR44 LR44 Alkaline 1.5V 158mAh 11.6mm 11.53 x 5.43mm LR Standard
RS Stock No. 593-423
BrandRS PRO
PHP115.922
Each (In a Pack of 5)
units
- SR44 Silver Oxide 1.55V 165mAh 11.6mm 11.6 x 5.4mm SR Standard
RS Stock No. 593-439
BrandRS PRO
PHP99.178
Each (In a Pack of 5)
units
- SR54 Silver Oxide 1.55V 70mAh 11.6mm 11.6 x 3.05mm SR Standard
RS Stock No. 514-7766
BrandRS PRO
PHP45.328
Each (In a Pack of 5)
units
- SR66 Silver Oxide 1.55V 25mAh 6.8mm 6.8 x 2.6mm SR Standard
RS Stock No. 494-2374
BrandRS PRO
PHP63.458
Each (In a Pack of 5)
units
- SR69 Silver Oxide 1.55V 44mAh 9.5mm 9.5 x 2.1mm SR Standard
RS Stock No. 593-401
BrandRS PRO
PHP109.652
Each (In a Pack of 5)
units
- SR41 Silver Oxide 1.55V 42mAh 7.9mm 7.9 x 3.6mm SR Standard
RS Stock No. 798-9408
BrandDuracell
PHP75.585
Each (In a Pack of 6)
units
PR70 PR70 Zinc Air 1.4V - 5.8mm 5.8 x 3.6mm LR Standard
RS Stock No. 801-0721
BrandRS PRO
PHP72.762
Each (In a Pack of 6)
units
- PR41 Zinc Air 1.4V 175mAh 7.9mm 7.9 x 3.6mm LR Standard
RS Stock No. 514-7744
BrandRS PRO
PHP47.554
Each (In a Pack of 5)
units
- SR59 Silver Oxide 1.55V 30mAh 7.9mm 7.9 x 2.65mm SR Standard
RS Stock No. 514-7722
BrandRS PRO
PHP26.232
Each (In a Pack of 5)
units
- SR58 Silver Oxide 1.55V 24mAh 7.9mm 7.9 x 2.1mm SR Standard
RS Stock No. 798-9391
BrandDuracell
PHP79.922
Each (In a Pack of 6)
units
PR44 PR44 Zinc Air 1.4V - 11.6mm 11.6 x 5.4mm LR Standard
RS Stock No. 801-0730
BrandRS PRO
PHP52.483
Each (In a Pack of 6)
units
- PR44 Zinc Air 1.4V 300mAh 11.6mm 11.6 x 5.4mm LR Standard
RS Stock No. 801-0733
BrandRS PRO
PHP52.882
Each (In a Pack of 6)
units
- PR70 Zinc Air 1.4V 100mAh 5.8mm 5.8 x 3.6mm LR Standard
RS Stock No. 514-7750
BrandRS PRO
PHP44.372
Each (In a Pack of 5)
units
- SR60 Silver Oxide 1.55V 18mAh 6.8mm 6.8 x 2.15mm SR Standard
RS Stock No. 494-2396
BrandRS PRO
PHP50.734
Each (In a Pack of 5)
units
- SR63 Silver Oxide 1.55V 14mAh 5.8mm 5.8 x 2.15mm SR Standard
RS Stock No. 494-2403
BrandRS PRO
PHP67.594
Each (In a Pack of 5)
units
- SR57 Silver Oxide 1.55V 55mAh 9.5mm 9.5 x 2.7mm SR Standard
RS Stock No. 801-0727
BrandRS PRO
PHP52.882
Each (In a Pack of 6)
units
- PR48 Zinc Air 1.4V 95mAh 7.9mm 7.9 x 5.4mm LR Standard
RS Stock No. 514-7700
BrandRS PRO
PHP98.488
Each (In a Pack of 5)
units
- SR43 Silver Oxide 1.55V 120mAh 11.6mm 11.6 x 4.2mm SR Standard
RS Stock No. 514-7716
BrandRS PRO
PHP77.136
Each (In a Pack of 5)
units
- SR45 Silver Oxide 1.55V 60mAh 9.5mm 9.5 x 3.6mm SR Standard
RS Stock No. 595-637
BrandRS PRO
PHP78.726
Each (In a Pack of 5)
units
- SR48 Silver Oxide 1.55V 70mAh 7.9mm 7.9 x 5.4mm SR Standard