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 801-0721
BrandRS PRO
HK$7.39
/個 (每包:6個)
單位
- PR41 - Zinc Air 1.4V 175mAh Standard 7.9mm 7.9 x 3.6mm LR
RS庫存編號 181-2603
製造零件編號TSXBATM03
HK$551.87
單位
TSX BAT M03 CR3032 - Lithium Manganese Dioxide 3V - Standard 30mm 30 x 16 x 50mm CR
RS庫存編號 183-9472
製造零件編號BR-1225A/FAN
BrandPanasonic
HK$71.76
單位
BR1225 BR1225 - Lithium Polycarbon Monofluoride 3V 48mAh PCB Pin 12.5mm 12.5 x 2.5mm BR
RS庫存編號 188-2129
製造零件編號6430101501
BrandVarta
HK$22.75
單位
CR2430 CR2430 - Lithium Manganese Dioxide, Organic Electrolyte 3V 300mAh Standard 24.5mm 24.5 x 3mm CR
RS庫存編號 183-4290
BrandRS PRO
HK$23.37
單位
- LIR2025 - Lithium 3.7V 25mAh Standard 20mm 20 x 2.5mm LIR
RS庫存編號 183-4287
BrandRS PRO
HK$19.05
單位
- LIR1620 - Lithium 3.7V 16mAh Standard 16mm 16 x 2mm LIR
RS庫存編號 188-1981
製造零件編號20321903501
BrandVarta
HK$7.934
/個 (每包:1000個)
單位
V321 SR65 - NaOH Electrolyte, Silver Oxide, Zinc 1.55V 14.5mAh Standard 6.8mm 6.8 x 1.7mm V MF
RS庫存編號 183-9476
製造零件編號BR-1632A/FAN
BrandPanasonic
HK$48.95
單位
BR1632A BR1632A - Lithium Polycarbon Monofluoride 3V 120mAh PCB Pin 16mm 16 x 3.2mm BR
RS庫存編號 183-4284
BrandRS PRO
HK$19.44
單位
- LIR1220 - Lithium 3.7V 8mAh Standard 12mm 12 x 2mm LIR
RS庫存編號 188-1986
製造零件編號20384903501
BrandVarta
HK$9.78
/個 (每包:1000個)
單位
V384 SR41 - NaOH Electrolyte, Silver Oxide, Zinc 1.55V 37mAh Standard 7.9mm 7.9 x 3.6mm V MF
RS庫存編號 183-9481
製造零件編號BR-2330A/FAN
BrandPanasonic
HK$36.78
單位
BR2330 BR2330 - Lithium Polycarbon Monofluoride 3V 255mAh PCB Pin 23mm 23 x 3mm BR
RS庫存編號 183-9488
製造零件編號CR-1025/BN
BrandPanasonic
HK$20.23
單位
CR1025 CR1025 CR1025 Lithium Manganese Dioxide 3V 30mAh Standard 10mm 10 x 2.5mm CR
RS庫存編號 191-5221
製造零件編號97384197
BrandMurata
HK$3,726.58
1 Tray of 250 Pack(s)
Tray(s)
CR2450X-HE6 CR2450 CR2450 Lithium Manganese Dioxide 3V 600mAh PCB Pin 24.5mm 24.5 x 5mm CR
RS庫存編號 183-4297
BrandRS PRO
HK$8.644
/個 (每包:5個)
單位
CR1225 CR1225 - Lithium Manganese Dioxide 3V 50mAh Standard 12.5mm 12.5 x 2.5mm CR
RS庫存編號 801-0730
BrandRS PRO
HK$6.417
/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 191-7980
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 183-4294
BrandRS PRO
HK$19.44
單位
- LIR2430 - Lithium 2.75V 60mAh Standard 24mm 24 x 3mm LIR
RS庫存編號 191-6772
製造零件編號97384197
BrandMurata
HK$15.44
單位
CR2450 CR2450 CR2450 Lithium Manganese Dioxide 3V 600mAh PCB Pin 24.5mm 24.5 x 5mm CR
RS庫存編號 191-8140
製造零件編號97384162 SR920/8MR1WW
BrandMurata
HK$21.37
/個 (每包:5個)
單位
SR920 SR920 - Silver Oxide 1.55V 40mAh Standard 9.5mm 9.5 x 2.1mm SR
RS庫存編號 188-2115
製造零件編號20373903501
BrandVarta
HK$11.302
/個 (每包:5個)
單位
V373 SR68 - NaOH Electrolyte, Silver Oxide, Zinc 1.55V 28mAh Standard 9.5mm 9.5 x 1.7mm V MF