These LR44 button cell batteries are fairly common but it can be hard to keep them around. They fit the digital calipers, so if you use yours as much as we use ours, you may want to go ahead and pick up a spare.

Features:

• 1.5 VDC
• R44 Size Button Cell
• Zinc-Manganese Alkaline
• Compatible with LR1154, AG13, A76, 157, etc.