GP Brand Lithium Ion Button Cell CR2032 Battery - Sold per piece
These are a common back-up battery for many different ADF lenses being used in the market today.
CR2032 - Automatic welding mask batteries, for many different ADF welding helmets.
Buy your welding helmet batteries here.
This size battery is probably one of the most common button cell battery sizes on the market. - 20mm diameter and 3,2mm in thickness.
Battery Part Number: CR2032
Please be aware the photo is relatively old typically the "sell by" date on the currect stock is 2034