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| 18500 | 18490 | |
|---|---|---|
| Size | As long as an AA, but much fatter | As long as an AA, but much fatter Same |
| Length | As long as an AA, but much fatter | As long as an AA, but much fatter |
| Power | 3.7 volts | 3.7 volts Same |
| Kind | Rechargeable flashlight battery | Rechargeable flashlight battery |
Lasts longer: 18500 (about 27% longer)
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In a pinch. They’re the same width and power, but 18490 is thinner. It may wobble a little and runs out about 21% sooner. 18500 is too thick to fit where 18490 goes.
No. They’re the same width and power, but 18490 is thinner. It may wobble a little and runs out about 21% sooner. 18500 is too thick to fit where 18490 goes.
18500 (about 27% longer).
| 18500 | 18490 | |
|---|---|---|
| Diameter | 18.0 mm | 18.0 mm |
| Height | 50.0 mm | 49.0 mm |
| Nominal voltage | 3.7V | 3.7V |
| Typical capacity | 1400 mAh | 1100 mAh |
| Chemistry | Lithium-ion rechargeable | Lithium-ion rechargeable |
| Shelf life | 3 yrs | 3 yrs |
| Operating temp | -20 to 60 °C | -20 to 60 °C |