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 191-6779
製造零件編號97384202
BrandMurata
HK$15.44
單位
CR2450X-HO5 CR2450 CR2450 Lithium Manganese Dioxide 3V 600mAh PCB Pin 24.5mm 24.5 x 5mm CR
RS庫存編號 188-2125
製造零件編號6032201501
BrandVarta
HK$21.94
單位
CR2032 CR2032 - Lithium Manganese Dioxide, Organic Electrolyte 3V 230mAh PCB Pin 20mm 20 x 3.2mm CR
RS庫存編號 188-1978
製造零件編號6032201501
BrandVarta
HK$19.423
/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 183-9474
製造零件編號BR-1632/DBN
BrandPanasonic
HK$26.48
單位
BR1632 BR1632 - Lithium Polycarbon Monofluoride 3V 120mAh Standard 16mm 16 x 3.2mm BR
RS庫存編號 191-8146
製造零件編號97384003 LR44/8MR1WW
BrandMurata
HK$6.308
/個 (每包:5個)
單位
LR44 LR44 - Alkaline Manganese Dioxide 1.5V 120mAh Standard 11.6mm 11.6 x 5mm LR
RS庫存編號 188-1984
製造零件編號20373903501
BrandVarta
HK$10.738
/個 (每包:1000個)
單位
V373 SR68 - NaOH Electrolyte, Silver Oxide, Zinc 1.55V 28mAh Standard 9.5mm 9.5 x 1.7mm V MF
RS庫存編號 183-9479
製造零件編號BR-2032/F2N
BrandPanasonic
HK$39.75
單位
BR2032 BR2032 - Lithium Polycarbon Monofluoride 3V 200mAh PCB Pin 20mm 20 x 3.2mm BR
RS庫存編號 188-2133
製造零件編號6430401501
BrandVarta
HK$28.37
單位
CR2430 CR2430 - Lithium Manganese Dioxide, Organic Electrolyte 3V 280mAh Standard 24.5mm 24.5 x 3mm CR
RS庫存編號 191-7978
製造零件編號97384161 SR626/8MR1WW
BrandMurata
HK$1,271.56
1 Tray of 100 Pack(s)
Tray(s)
SR626 SR626 - Silver Oxide 1.55V 28mAh Standard 6.8mm 6.8 x 2.6mm SR
RS庫存編號 191-5228
製造零件編號97384199
BrandMurata
HK$2,390.96
1 Tray of 250 Pack(s)
Tray(s)
CR2032R-HO6 CR2032 CR2032 Lithium Manganese Dioxide 3V 200mAh PCB Pin 20mm 9.5 x 2.7mm CR
RS庫存編號 188-2121
製造零件編號20389903501
BrandVarta
HK$15.496
/個 (每包:5個)
單位
V389 SR54 - KOH Electrolyte, Silver Oxide, Zinc 1.55V 81mAh Standard 11.6mm 11.6 x 3.1mm V MF
RS庫存編號 191-5226
製造零件編號97384194
BrandMurata
HK$2,390.96
1 Tray of 250 Pack(s)
Tray(s)
CR2032R-HE1 CR2032 CR2032 Lithium Manganese Dioxide 3V 200mAh PCB Pin 20mm 9.5 x 2.7mm CR
RS庫存編號 494-2403
BrandRS PRO
HK$9.634
/個 (每包:5個)
單位
- SR57 - Silver Oxide 1.55V 55mAh Standard 9.5mm 9.5 x 2.7mm SR
RS庫存編號 191-6786
製造零件編號97384195
BrandMurata
HK$15.44
單位
CR2450R-HE6 CR2450 CR2450 Lithium Manganese Dioxide 3V 500mAh PCB Pin 24.5mm 24.5 x 5mm CR
RS庫存編號 183-9471
製造零件編號BR-1225A/BN
BrandPanasonic
HK$58.51
單位
BR1225 BR1225 - Lithium Polycarbon Monofluoride 3V 48mAh Standard 12.5mm 12.5 x 2.5mm BR
RS庫存編號 183-4289
BrandRS PRO
HK$18.56
單位
- LIR2016 - Lithium 3.7V 16mAh Standard 20mm 20 x 1.6mm LIR
RS庫存編號 191-6790
製造零件編號97384200
BrandMurata
HK$15.44
單位
CR2450R-HO5 CR2450 CR2450 Lithium Manganese Dioxide 3V 500mAh PCB Pin 24.5mm 24.5 x 5mm CR
RS庫存編號 183-9494
製造零件編號CR-2PE/BN
BrandPanasonic
HK$51.98
單位
CR2 CR2 - Lithium Manganese Dioxide 3V 850mAh PCB Pin 15.6mm 15.6 x 27mm CR
RS庫存編號 183-4283
BrandRS PRO
HK$19.54
單位
- LIR1025 - Lithium 3.7V 6mAh Standard 10mm 10 x 2.5mm LIR
RS庫存編號 191-5220
製造零件編號97384196
BrandMurata
HK$2,390.96
1 Tray of 250 Pack(s)
Tray(s)
CR2032X-HE1 CR2032 CR2032 Lithium Manganese Dioxide 3V 220mAh PCB Pin 20mm 20 x 3.2mm CR