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

CR2025 vs. SR626SW / 377

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

Comparing:
CR2025
SR626SW / 377

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 →

An SR626SW (also sold as 377) is a 1.55V Silver Oxide button cell measuring approximately 6.8mm in diameter and 2.6mm in thickness. It's one of the most common watch battery sizes, prized for the flat, stable discharge voltage silver oxide chemistry provides over the cell's life.

View full SR626SW / 377 spec sheet →

Specification Comparison Table

5 Parameters
Parameter / Spec
Diameter
20.00 mm 6.80 mm
Height
2.50 mm 2.60 mm
Nominal Operating Voltage
3.00 V 1.55 V
Nominal Capacity
165 mAh
Chemistry
Silver Oxide