Side-by-Side Comparison
Button Cells
CR2477 vs. LR44 / AG13
Comparing 2 standards across 6 specifications. 6 key differences identified.
Comparing:
CR2477
LR44 / AG13
A CR2477 coin cell is a 3.0V Lithium Manganese Dioxide battery measuring 24.5mm in diameter and 7.7mm in thickness -- the largest-capacity cell in the common CR-series lithium coin cell line. Its size suits devices needing extended runtime from a single coin-shaped cell, such as larger remote controls and industrial sensors.
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
|
24.50 mm | 11.60 mm |
|
Height
|
7.70 mm | 5.40 mm |
|
Nominal Operating Voltage
|
3.00 V | — |
|
Chemistry
|
Lithium Manganese Dioxide | — |
|
LR44 Voltage (Alkaline)
|
— | 1.50 V |
|
SR44 Voltage (Silver Oxide)
|
— | 1.55 V |