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 IEC Name Chemistry Nominal Voltage Capacity Terminal Type Diameter Dimensions Series
RS庫存編號 191-8138
製造零件編號97384161 SR626/8MR1WW
BrandMurata
HK$14.528
/個 (每包:5個)
單位
SR626 SR626 - Silver Oxide 1.55V 28mAh Standard 6.8mm 6.8 x 2.6mm SR
RS庫存編號 183-9476
製造零件編號BR-1632A/FAN
BrandPanasonic
HK$57.59
單位
BR1632A BR1632A - Lithium Polycarbon Monofluoride 3V 120mAh PCB Pin 16mm 16 x 3.2mm BR
RS庫存編號 801-0730
BrandRS PRO
HK$7.55
/個 (每包:6個)
單位
- PR44 - Zinc Air 1.4V 300mAh Standard 11.6mm 11.6 x 5.4mm LR
RS庫存編號 191-7981
製造零件編號97384004 LR41/8MR1WW
BrandMurata
HK$388.96
1 Tray of 100 Pack(s)
Tray(s)
LR41 SR41 - Alkaline Manganese Dioxide 1.5V 45mAh Standard 7.9mm 7.9 x 3.6mm LR
RS庫存編號 191-5229
製造零件編號97384200
BrandMurata
HK$3,666.29
1 Tray of 250 Pack(s)
Tray(s)
CR2450R-HO5 CR2450 CR2450 Lithium Manganese Dioxide 3V 500mAh PCB Pin 24.5mm 24.5 x 5mm CR
RS庫存編號 188-1978
製造零件編號6032201501
BrandVarta
HK$17.092
/個 (每包:480個)
單位
CR2032 CR2032 - Lithium Manganese Dioxide, Organic Electrolyte 3V 230mAh PCB Pin 20mm 20 x 3.2mm CR
RS庫存編號 188-2110
製造零件編號20341903501
BrandVarta
HK$10.73
/個 (每包:5個)
單位
V341 SR714SW - NaOH Electrolyte, Silver Oxide, Zinc 1.55V 15mAh Standard 7.9mm 7.9 x 1.5mm V MF
RS庫存編號 191-8144
製造零件編號97384004 LR41/8MR1WW
BrandMurata
HK$4.414
/個 (每包:5個)
單位
LR41 SR41 - Alkaline Manganese Dioxide 1.5V 45mAh Standard 7.9mm 7.9 x 3.6mm LR
RS庫存編號 183-9479
製造零件編號BR-2032/F2N
BrandPanasonic
HK$38.97
單位
BR2032 BR2032 - Lithium Polycarbon Monofluoride 3V 200mAh PCB Pin 20mm 20 x 3.2mm BR
RS庫存編號 183-9486
製造零件編號BR-2477A/FBN
BrandPanasonic
HK$86.90
單位
BR2477A BR2477A - Lithium Polycarbon Monofluoride 3V 1Ah Standard 24.5mm 24.5 x 7.7mm BR
RS庫存編號 183-4290
BrandRS PRO
HK$4.70
單位
- LIR2025 - Lithium 3.7V 25mAh Standard 20mm 20 x 2.5mm LIR
RS庫存編號 183-9472
製造零件編號BR-1225A/FAN
BrandPanasonic
HK$70.35
單位
BR1225 BR1225 - Lithium Polycarbon Monofluoride 3V 48mAh PCB Pin 12.5mm 12.5 x 2.5mm BR
RS庫存編號 801-0727
BrandRS PRO
HK$7.417
/個 (每包:6個)
單位
- PR48 - Zinc Air 1.4V 95mAh Standard 7.9mm 7.9 x 5.4mm LR
RS庫存編號 191-7980
製造零件編號97384163 SR927/8MR1WW
BrandMurata
HK$1,953.95
1 Tray of 100 Pack(s)
Tray(s)
SR927 SR927 - Silver Oxide 1.55V 60mAh Standard 9.5mm 9.5 x 2.7mm SR
RS庫存編號 183-9485
製造零件編號BR-2450A/GAN
BrandPanasonic
HK$79.54
單位
BR2450A BR2450A - Lithium Polycarbon Monofluoride 3V 550mAh Standard 24.5mm 24.5 x 5mm BR
RS庫存編號 181-2603
製造零件編號TSXBATM03
HK$545.52
單位
TSX BAT M03 CR3032 - Lithium Manganese Dioxide 3V - Standard 30mm 30 x 16 x 50mm CR
RS庫存編號 183-4289
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RS庫存編號 183-9471
製造零件編號BR-1225A/BN
BrandPanasonic
HK$49.73
單位
BR1225 BR1225 - Lithium Polycarbon Monofluoride 3V 48mAh Standard 12.5mm 12.5 x 2.5mm BR
RS庫存編號 183-4288
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單位
- LIR1654 - Lithium 3.7V 90mAh Standard 16mm 16 x 5.4mm LIR
RS庫存編號 183-9470
製造零件編號BR-1225/HCN
BrandPanasonic
HK$5.88
單位
BR1225 BR1225 - Lithium Polycarbon Monofluoride 3V 48mAh PCB Pin 12.5mm 12.5 x 2.5mm BR