Side-by-Side Comparison
Button Cells
LR44 / AG13 vs. SR626SW / 377
Comparing 2 standards across 6 specifications. 6 key differences identified.
Comparing:
LR44 / AG13
SR626SW / 377
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.
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.
Specification Comparison Table
6 Parameters| Parameter / Spec | ||
|---|---|---|
|
Diameter
|
11.60 mm | 6.80 mm |
|
Height
|
5.40 mm | 2.60 mm |
|
LR44 Voltage (Alkaline)
|
1.50 V | — |
|
SR44 Voltage (Silver Oxide)
|
1.55 V | — |
|
Nominal Operating Voltage
|
— | 1.55 V |
|
Chemistry
|
— | Silver Oxide |
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