Side-by-Side Comparison
Button Cells
CR2032 vs. LR44 / AG13
Comparing 2 standards across 6 specifications. 6 key differences identified.
Comparing:
CR2032
LR44 / AG13
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 LR44 battery is a 1.5V Alkaline button cell measuring 11.6mm in diameter and 5.4mm in thickness. SR44 is the Silver Oxide equivalent offering 1.55V with a flat discharge curve, critical for digital calipers.
Specification Comparison Table
6 Parameters| Parameter / Spec | ||
|---|---|---|
|
Diameter
|
20.00 mm | 11.60 mm |
|
Height
|
3.20 mm | 5.40 mm |
|
Nominal Operating Voltage
|
3.00 V | — |
|
Nominal Capacity
|
225 mAh | — |
|
LR44 Voltage (Alkaline)
|
— | 1.50 V |
|
SR44 Voltage (Silver Oxide)
|
— | 1.55 V |