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 188-2133
製造零件編號6430401501
BrandVarta
HK$27.91
單位
CR2430 CR2430 - Lithium Manganese Dioxide, Organic Electrolyte 3V 280mAh - 24.5mm 24.5 x 3mm CR
RS庫存編號 183-9487
製造零件編號BR-2477A/GAN
BrandPanasonic
HK$99.07
單位
- BR2477A - Lithium Polycarbon Monofluoride 3V 1Ah - 24.5mm 24.5 x 7.7mm BR
RS庫存編號 183-4296
BrandRS PRO
HK$34.37
單位
- LIR2477 - Lithium 3.6V 200mAh - 24mm 24 x 7.7mm -
RS庫存編號 183-9481
製造零件編號BR-2330A/FAN
BrandPanasonic
HK$56.59
單位
- BR2330 - Lithium Polycarbon Monofluoride 3V 255mAh - 23mm 23 x 3mm BR
RS庫存編號 183-4284
BrandRS PRO
HK$22.87
單位
- LIR1220 - Lithium 3.7V 8mAh - 12mm 12 x 2mm LIR
RS庫存編號 183-4287
BrandRS PRO
HK$22.41
單位
- LIR1620 - Lithium 3.7V 16mAh - 16mm 16 x 2mm -
RS庫存編號 183-4290
BrandRS PRO
HK$23.10
單位
- LIR2025 - Lithium 3.7V 25mAh - 20mm 20 x 2.5mm -
RS庫存編號 188-1980
製造零件編號6430401501
BrandVarta
HK$26.518
/個 (每包:25個)
單位
CR2430 CR2430 - Lithium Manganese Dioxide, Organic Electrolyte 3V 280mAh - 24.5mm 24.5 x 3mm CR
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 Flat 20mm 20 x 3.2mm -
RS庫存編號 188-1991
製造零件編號20395903501
BrandVarta
HK$9.431
/個 (每包:1000個)
單位
V395 SR57 - NaOH Electrolyte, Silver Oxide, Zinc 1.55V 38mAh - 9.5mm 9.5 x 2.7mm V MF
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 - 5.8mm 5.8 x 2.2mm V MF
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 - - Alkaline Manganese Dioxide 1.5V 45mAh Flat 7.9mm 7.9 x 3.6mm -
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 Flat 24.5mm 24.5 x 5mm -
RS庫存編號 191-6774
製造零件編號97384198
BrandMurata
HK$21.05
單位
CR2477X-HE2 CR2477 CR2477 Lithium Manganese Dioxide 3V 1Ah Flat 24.5mm 24.5 x 7.7mm -
RS庫存編號 181-2601
製造零件編號TSXBATM02
HK$545.52
單位
- BR2032 - - 3V - - 20mm 20 x 3.2mm -
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 -
RS庫存編號 188-2136
製造零件編號20321903501
BrandVarta
HK$8.192
/個 (每包:5個)
單位
V321 SR65 - NaOH Electrolyte, Silver Oxide, Zinc 1.55V 14.5mAh - 6.8mm 6.8 x 1.7mm 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 Lithium Manganese Dioxide 3V 30mAh - 10mm 10 x 2.5mm CR
RS庫存編號 183-9473
製造零件編號BR-1225A/HBN
BrandPanasonic
HK$70.35
單位
- BR1225 - Lithium Polycarbon Monofluoride 3V 48mAh - 12.5mm 12.5 x 2.5mm BR
RS庫存編號 183-4297
BrandRS PRO
HK$8.474
/個 (每包:5個)
單位
- CR1225 - Lithium Manganese Dioxide 3V 50mAh - 12.5mm 12.5 x 2.5mm CR