Side-by-Side Comparison
Button Cells
CR2032 vs. SR626SW / 377
Comparing 2 standards across 5 specifications. 5 key differences identified.
Comparing:
CR2032
SR626SW / 377
A CR2032 coin cell is a 3.0V Lithium Manganese Dioxide battery measuring 20.0mm in diameter and 3.2mm in thickness with a standard capacity of ~225 mAh. It is widely used in key fobs, motherboard CMOS, and Apple AirTags.
An SR626SW (also sold as 377) is a 1.55V Silver Oxide button cell measuring approximately 6.8mm in diameter and 2.6mm in thickness. It's one of the most common watch battery sizes, prized for the flat, stable discharge voltage silver oxide chemistry provides over the cell's life.
Specification Comparison Table
5 Parameters| Parameter / Spec | ||
|---|---|---|
|
Diameter
|
20.00 mm | 6.80 mm |
|
Height
|
3.20 mm | 2.60 mm |
|
Nominal Operating Voltage
|
3.00 V | 1.55 V |
|
Nominal Capacity
|
225 mAh | — |
|
Chemistry
|
— | Silver Oxide |