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.

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 chemisty:
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?
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
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RS庫存編號 188-2121
製造零件編號20389903501
BrandVarta
HK$16.028
/個 (每包:5個)
單位
20389 SR54 - KOH Electrolyte, Silver Oxide, Zinc 1.55V 81mAh - 11.6mm 11.6 Dia. x 3.1mm V MF
RS庫存編號 183-4295
BrandRS PRO
HK$21.54
單位
- LIR2450 - Lithium 3.6V 120mAh - 24mm 24 Dia. x 5mm -
全新
RS庫存編號 188-2123
製造零件編號20393903501
BrandVarta
HK$11.66
/個 (每包:5個)
單位
20393 SR48 - KOH Electrolyte, Silver Oxide, Zinc 1.55V 77mAh - 7.9mm 7.9 Dia. x 5.4mm V MF
RS庫存編號 183-9493
製造零件編號CR-123PE/BN
BrandPanasonic
HK$51.37
單位
- CR123A - Lithium Manganese Dioxide 3V 1.4Ah - 17mm 17 (Dia.) x 34.5mm CR
RS庫存編號 183-4283
BrandRS PRO
HK$23.90
單位
- LIR1025 - Lithium 3.7V 6mAh - 10mm 10 Dia. x 2.5mm -
全新
RS庫存編號 191-6777
製造零件編號97384201
BrandMurata
HK$10.62
單位
CR2032X-HO6 - CR2032 Lithium Manganese Dioxide 3V 220mAh Flat 20mm 20 Dia. x 3.2mm -
RS庫存編號 183-9471
製造零件編號BR-1225A/BN
BrandPanasonic
HK$49.15
單位
- BR1225 - Lithium Polycarbon Monofluoride 3V 48mAh - 12.5mm 12.5 (Dia.) x 2.5mm BR
RS庫存編號 183-4296
BrandRS PRO
HK$25.98
單位
- LIR2477 - Lithium 3.6V 200mAh - 24mm 24 Dia. x 7.7mm -
全新
RS庫存編號 188-2125
製造零件編號6032201501
BrandVarta
HK$22.69
單位
6032 CR2032 - Lithium Manganese Dioxide, Organic Electrolyte 3V 230mAh - 20mm 20 Dia. x 3.2mm CR
RS庫存編號 183-9494
製造零件編號CR-2PE/BN
BrandPanasonic
HK$51.37
單位
- - - Lithium Manganese Dioxide 3V 850mAh - 15.6mm 15.6 (Dia.) x 27mm CR
RS庫存編號 798-9395
BrandDuracell
HK$9.552
/個 (每包:6個)
單位
- PR41 - Zinc Air 1.4V - Standard 7.9mm 7.9 x 3.6mm -
RS庫存編號 183-4284
BrandRS PRO
HK$19.12
單位
- LIR1220 - Lithium 3.7V 8mAh - 12mm 12 Dia. x 2mm LIR
全新
RS庫存編號 191-6779
製造零件編號97384202
BrandMurata
HK$16.29
單位
CR2450X-HO5 - CR2450 Lithium Manganese Dioxide 3V 600mAh Flat 24.5mm 24.5 Dia. x 5mm -
RS庫存編號 183-9472
製造零件編號BR-1225A/FAN
BrandPanasonic
HK$59.10
單位
- BR1225 - Lithium Polycarbon Monofluoride 3V 48mAh - 12.5mm 12.5 (Dia.) x 2.5mm BR
RS庫存編號 183-9480
製造零件編號BR-2330/HFN
BrandPanasonic
HK$39.40
單位
- BR2330 - Lithium Polycarbon Monofluoride 3V 255mAh - 23mm 23 (Dia.) x 3mm BR
RS庫存編號 183-4297
BrandRS PRO
HK$7.028
/個 (每包:5個)
單位
CR1225 CR1225 - Lithium Manganese Dioxide 3V 50mAh - 12.5mm 12.5 Dia. x 2.5mm CR
RS庫存編號 183-9475
製造零件編號BR-1632/HFN
BrandPanasonic
HK$34.28
單位
- BR1632 - Lithium Polycarbon Monofluoride 3V 120mAh - 16mm 16 (Dia.) x 3.2mm BR
全新
RS庫存編號 191-5224
製造零件編號97384202
BrandMurata
HK$3,868.19
1 Tray of 250 Pack(s)
Tray(s)
CR2450X-HO5 - CR2450 Lithium Manganese Dioxide 3V 600mAh Flat 24.5mm 24.5 Dia. x 5mm -
全新
RS庫存編號 191-7978
製造零件編號97384161 SR626/8MR1WW
BrandMurata
HK$1,054.92
1 Tray of 100 Pack(s)
Tray(s)
SR626 - - Silver Oxide 1.55V 28mAh Flat 6.8mm 6.8 Dia. x 2.6mm -
RS庫存編號 183-9484
製造零件編號BR-2450A/FAN
BrandPanasonic
HK$66.82
單位
- BR2450A - Lithium Polycarbon Monofluoride 3V 550mAh - 24.5mm 24.5 (Dia.) x 5mm BR