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 183-9474
製造零件編號BR-1632/DBN
BrandPanasonic
HK$31.15
單位
BR1632 BR1632 - Lithium Polycarbon Monofluoride 3V 120mAh Standard 16mm 16 x 3.2mm BR
RS庫存編號 191-7979
製造零件編號97384162 SR920/8MR1WW
BrandMurata
HK$1,880.05
1 Tray of 100 Pack(s)
Tray(s)
SR920 SR920 - Silver Oxide 1.55V 40mAh Standard 9.5mm 9.5 x 2.1mm SR
RS庫存編號 183-9484
製造零件編號BR-2450A/FAN
BrandPanasonic
HK$79.55
單位
BR2450A BR2450A - Lithium Polycarbon Monofluoride 3V 550mAh PCB Pin 24.5mm 24.5 x 5mm BR
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 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 183-4295
BrandRS PRO
HK$26.63
單位
- LIR2450 - Lithium 3.6V 120mAh Standard 24mm 24 x 5mm LIR
RS庫存編號 188-2113
製造零件編號20361903501
BrandVarta
HK$7.986
/個 (每包:5個)
單位
V361 SR58 - KOH Electrolyte, Silver Oxide, Zinc 1.55V 22mAh Standard 7.9mm 7.9 x 2.1mm V MF
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 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
RS庫存編號 191-6784
製造零件編號97384194
BrandMurata
HK$10.07
單位
CR2032R-HE1 CR2032 CR2032 Lithium Manganese Dioxide 3V 200mAh PCB Pin 20mm 9.5 x 2.7mm CR
RS庫存編號 183-9480
製造零件編號BR-2330/HFN
BrandPanasonic
HK$46.68
單位
BR2330 BR2330 - Lithium Polycarbon Monofluoride 3V 255mAh PCB Pin 23mm 23 x 3mm BR
RS庫存編號 183-9494
製造零件編號CR-2PE/BN
BrandPanasonic
HK$61.15
單位
CR2 CR2 - Lithium Manganese Dioxide 3V 850mAh PCB Pin 15.6mm 15.6 x 27mm CR
RS庫存編號 181-2601
製造零件編號TSXBATM02
HK$545.52
單位
BR2032 BR2032 - - 3V - Standard 20mm 20 x 3.2mm BR
RS庫存編號 183-4297
BrandRS PRO
HK$8.474
/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 191-8142
製造零件編號97384163 SR927/8MR1WW
BrandMurata
HK$22.216
/個 (每包:5個)
單位
SR927 SR927 - Silver Oxide 1.55V 60mAh Standard 9.5mm 9.5 x 2.7mm SR
RS庫存編號 188-1988
製造零件編號20393903501
BrandVarta
HK$10.498
/個 (每包:500個)
單位
V393 SR48 - KOH Electrolyte, Silver Oxide, Zinc 1.55V 77mAh Standard 7.9mm 7.9 x 5.4mm V MF
RS庫存編號 183-4290
BrandRS PRO
HK$19.64
單位
- LIR2025 - Lithium 3.7V 25mAh Standard 20mm 20 x 2.5mm LIR
RS庫存編號 188-2117
製造零件編號20379903501
BrandVarta
HK$8.214
/個 (每包:5個)
單位
V379 SR63 - NaOH Electrolyte, Silver Oxide, Zinc 1.55V 15mAh Standard 5.8mm 5.8 x 2.2mm V MF
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 188-1982
製造零件編號20341903501
BrandVarta
HK$10.181
/個 (每包:1000個)
單位
V341 SR714SW - NaOH Electrolyte, Silver Oxide, Zinc 1.55V 15mAh Standard 7.9mm 7.9 x 1.5mm V MF