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 Size Chemistry Nominal Voltage Capacity Diameter Dimensions Terminal Type
RS Stock No. 775-7233
BrandRS PRO
PHP38.91
Each (In a Pack of 5)
units
LR44 Alkaline 1.5V 158mAh 11.53mm 11.53 x 5.43mm Standard
RS Stock No. 593-423
BrandRS PRO
PHP108.238
Each (In a Pack of 5)
units
SR44 Silver Oxide 1.55V 165mAh 11.6mm 11.6 x 5.4mm Standard
RS Stock No. 593-439
BrandRS PRO
PHP92.604
Each (In a Pack of 5)
units
SR54 Silver Oxide 1.55V 70mAh 11.6mm 11.6 x 3.05mm Standard
RS Stock No. 514-7766
BrandRS PRO
PHP44.80
Each (In a Pack of 5)
units
SR66 Silver Oxide 1.55V 25mAh 6.8mm 6.8 x 2.6mm Standard
RS Stock No. 494-2374
BrandRS PRO
PHP62.72
Each (In a Pack of 5)
units
SR69 Silver Oxide 1.55V 44mAh 9.5mm 9.5 x 2.1mm Standard
RS Stock No. 593-401
BrandRS PRO
PHP102.382
Each (In a Pack of 5)
units
SR41 Silver Oxide 1.55V 42mAh 7.9mm 7.9 x 3.6mm Standard
RS Stock No. 514-7744
BrandRS PRO
PHP47.00
Each (In a Pack of 5)
units
SR59 Silver Oxide 1.55V 30mAh 7.9mm 7.9 x 2.65mm Standard
RS Stock No. 514-7722
BrandRS PRO
PHP30.86
Each (In a Pack of 5)
units
SR58 Silver Oxide 1.55V 24mAh 7.9mm 7.9 x 2.1mm Standard
RS Stock No. 801-0721
BrandRS PRO
PHP71.205
Each (In a Pack of 6)
units
PR41 Zinc Air 1.4V 175mAh 7.9mm 7.9 x 3.6mm Standard
RS Stock No. 801-0733
BrandRS PRO
PHP51.75
Each (In a Pack of 6)
units
PR70 Zinc Air 1.4V 100mAh 5.8mm 5.8 x 3.6mm Standard
RS Stock No. 494-2396
BrandRS PRO
PHP50.144
Each (In a Pack of 5)
units
SR63 Silver Oxide 1.55V 14mAh 5.8mm 5.8 x 2.15mm Standard
RS Stock No. 514-7700
BrandRS PRO
PHP91.958
Each (In a Pack of 5)
units
SR43 Silver Oxide 1.55V 120mAh 11.6mm 11.6 x 4.2mm Standard
RS Stock No. 494-2403
BrandRS PRO
PHP66.146
Each (In a Pack of 5)
units
SR57 Silver Oxide 1.55V 55mAh 9.5mm 9.5 x 2.7mm Standard
RS Stock No. 514-7750
BrandRS PRO
PHP43.422
Each (In a Pack of 5)
units
SR60 Silver Oxide 1.55V 18mAh 6.8mm 6.8 x 2.15mm Standard
RS Stock No. 514-7716
BrandRS PRO
PHP75.484
Each (In a Pack of 5)
units
SR45 Silver Oxide 1.55V 60mAh 9.5mm 9.5 x 3.6mm Standard
RS Stock No. 595-659
BrandRS PRO
PHP58.364
Each (In a Pack of 5)
units
SR55 Silver Oxide 1.55V 40mAh 11.6mm 11.6 x 2.1mm Standard
RS Stock No. 801-0730
BrandRS PRO
PHP51.36
Each (In a Pack of 6)
units
PR44 Zinc Air 1.4V 300mAh 11.6mm 11.6 x 5.4mm Standard
RS Stock No. 595-637
BrandRS PRO
PHP77.812
Each (In a Pack of 5)
units
SR48 Silver Oxide 1.55V 70mAh 7.9mm 7.9 x 5.4mm Standard
RS Stock No. 801-0727
BrandRS PRO
PHP51.75
Each (In a Pack of 6)
units
PR48 Zinc Air 1.4V 95mAh 7.9mm 7.9 x 5.4mm Standard
RS Stock No. 798-9408
BrandDuracell
PHP74.707
Each (In a Pack of 6)
units
PR70 Zinc Air 1.4V - 5.8mm 5.8 x 3.6mm Standard
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