Lithium Battery CR2032 (guide for the rest of us)

Basics (specification)

Similar batteries:

CR2032, CR2032-1W,DL2032,ECR2032, KECR2032-1, DL2032B, ECR2032BP, BR2032

Physical dimensions:

Diameter: ~3/4in; Height: ~1/8in

Diameter: 20mm; Height: 3.2mm

Capacity

CR2032: 225mAh; BR2032: 195mAh;

Manufacturers

Duracell, Rayovac, Panasonic, Renata, Toshiba, Varta, Maxell, Gold Peak,...

Importance of freshness and brand? (how long will it last?)

Batteries discharge over time, even when not in use. We recommend that you purchase FRESH batteries as only than you will have rated performance. It is also important to note that discharge depends on temperature they are stored at; for example Duracell's technical note suggests that loss of Zinc-Carbon batteries may be even 80%/year at 100F. Situation is better with DURACELL(r) Lithium batteries, and they lose 2%/year at 100F, but that increases to over 10%/year at 140F ambient temperature.
We recommend buying FRESH, BRAND named batteries as that will ensure that they will give your devices longer worry and maintenance free life.