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

CR1620 vs. CR2025

Comparing 2 standards across 5 specifications. 4 key differences identified.

Comparing:
CR1620
CR2025

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 →

A CR2025 coin cell measures 20.0mm in diameter and 2.5mm in height, supplying 3.0V at ~165 mAh. While identical in diameter to the CR2032, its thinner 2.5mm profile prevents reliable contact in CR2032 battery holders.

View full CR2025 spec sheet →

Specification Comparison Table

5 Parameters
Parameter / Spec
Diameter
16.00 mm 20.00 mm
Height
2.00 mm 2.50 mm
Nominal Operating Voltage
3.00 V 3.00 V
Chemistry
Lithium Manganese Dioxide
Nominal Capacity
165 mAh