# item.guide
Side-by-Side Comparison Button Cells

CR1620 vs. LR41 / AG3

Comparing 2 standards across 4 specifications. 4 key differences identified.

Comparing:
CR1620
LR41 / AG3

A CR1620 coin cell is a 3.0V Lithium Manganese Dioxide battery measuring 16.0mm in diameter and 2.0mm in thickness. Like the thinner CR1616, it's a common choice for automotive key fobs and other compact keyless-entry remotes.

View full CR1620 spec sheet →

An LR41 battery (also sold as AG3 or 392) is a 1.5V Alkaline button cell measuring approximately 7.9mm in diameter and 3.6mm in thickness. It's a common size for small thermometers, compact watches, and other low-drain miniature electronics.

View full LR41 / AG3 spec sheet →

Specification Comparison Table

4 Parameters
Parameter / Spec
Diameter
16.00 mm 7.90 mm
Height
2.00 mm 3.60 mm
Nominal Operating Voltage
3.00 V 1.50 V
Chemistry
Lithium Manganese Dioxide Alkaline