Side-by-Side Comparison
Button Cells
CR1220 vs. LR44 / AG13
Comparing 2 standards across 7 specifications. 7 key differences identified.
Comparing:
CR1220
LR44 / AG13
A CR1220 coin cell is a 3.0V Lithium Manganese Dioxide battery measuring 12.5mm in diameter and 2.0mm in thickness, with a nominal capacity of about 35 mAh. Its small size makes it common in car key fobs, small LED lights, and low-power Bluetooth beacons.
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
7 Parameters| Parameter / Spec | ||
|---|---|---|
|
Diameter
|
12.50 mm | 11.60 mm |
|
Height
|
2.00 mm | 5.40 mm |
|
Nominal Operating Voltage
|
3.00 V | — |
|
Nominal Capacity
|
35 mAh | — |
|
Chemistry
|
Lithium Manganese Dioxide | — |
|
LR44 Voltage (Alkaline)
|
— | 1.50 V |
|
SR44 Voltage (Silver Oxide)
|
— | 1.55 V |