Round Lithium-ion Rechargeable
Lithium-ion rechargeable batteries are not interchangeable with primary types with different chemistry. Lithium-ion cells are made in various sizes, usually made into packs for portable equipment. All of these cylindrical cells have a nominal voltage around 3.7 volts, and have a positive terminal nub at one end and flat negative terminal at the other. Many types are available with an internal protection circuit to prevent over-discharge and short-circuit damage. Safe and economic recharging requires use of chargers specified for these cells. Popular applications include laptop battery packs, electronic cigarettes and flashlights.
Some sizes of lithium primary cells have lithium-ion rechargeable equivalents.
Many of the names here follow the same scheme as used for lithium primary cells the first two digits indicating the (approximate) diameter in milimetres and the remainder indicating the (approximate) length in tenths of a millimeter.
| Most common name | Other common names | IEC name | ANSI/NEDA name | Typical capacity (mAh) | Dimensions (max)
Diameter × Length (mm) |
Comments |
|---|---|---|---|---|---|---|
| 10180 | 90 | 10 × 18 | ||||
| 10280 | 200 | 10 × 28 | ||||
| 10440 | 340 | 10 × 44 | Same size as AAA cell. | |||
| 14250 | 300 | 14 × 25 | Same size as 1/2 AA cell. | |||
| 14500 | 700-800 | 14 × 50 | Same size as AA cell. | |||
| 14650 | 1600 | 14 × 65 | ||||
| 15270 | 450-600 | 15 × 27 | Substitute for CR2 primary lithium. 3V. | |||
| 16340 | 500-1000 | 16 × 34 | Alternate substitute for CR123A primary lithium. Unprotected. (16 × 36, some protected versions). | |||
| RCR123A | 17340, R123, RCR123, Tenergy 30200 | 750 | 17 × 34.5 | Same size as, and substitute for, CR123 primary lithium for cameras and flashlights. Protected version. | ||
| 17500 | 1100 | 17.3 × 50 | The same size as an A cell, and 1.5 times the length of a CR123A. | |||
| 17670 | 1250 | 17 × 67 | 2 times the length of a standard CR123A. | |||
| 18350 | 700-1200 | 18 × 35 (nominal) | ||||
| 18500 | 1400 | 18.3 × 49.8 | ||||
| 18650 | 168A | 2200–3400 | 18.6 × 65.2 | This cell type is used in many laptop batteries and the Tesla Roadster and LED flashlights. | ||
| 19670 | Protected 18650 | 2200–3100 | 19 × 67 | Correct designation of protected 18650. | ||
| 25500 | 2500–5000 | 24.3 × 49.2 | About the same size as a C cell. | |||
| 26650 | 3300 | 26.5 × 65.4 | ||||
| 32600 | 3000–6000 | 32 × 61.9 | About the same size as a D cell. |
Read more about this topic: List Of Battery Sizes