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| CR2040 | CR2050A | |
|---|---|---|
| Size | About the size of a nickel | About the size of a nickel Same |
| Thickness | As thick as 5 credit cards stacked | As thick as 7 credit cards stacked |
| Power | 3 volts | 3 volts Same |
| Kind | Coin battery | Coin battery |
Lasts longer: CR2050A (about 23% longer)
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No. They’re the same width and power, but CR2040 is thinner. It may wobble a little and runs out about 19% sooner. CR2050A is too thick to fit where CR2040 goes.
In a pinch. They’re the same width and power, but CR2040 is thinner. It may wobble a little and runs out about 19% sooner. CR2050A is too thick to fit where CR2040 goes.
CR2050A (about 23% longer).
| CR2040 | CR2050A | |
|---|---|---|
| Diameter | 20.0 mm | 20.0 mm |
| Height | 4.0 mm | 5.0 mm |
| Nominal voltage | 3.0V | 3.0V |
| Typical capacity | 280 mAh | 345 mAh |
| Chemistry | Lithium manganese dioxide | Lithium manganese dioxide |
| Shelf life | 10 yrs | 10 yrs |
| Operating temp | -30 to 60 °C | -40 to 125 °C |