26650
A wide rechargeable lithium-ion cell, 26 mm across. Trades the 18650's packing density for more capacity per cell.
- Voltage
- 3.6 V
- Chemistry
- Li-ion
- Size
- 26 × 65 mm
- Capacity
- 4000–5500 mAh
Specifications
| Type | Cylindrical |
|---|---|
| Chemistry | Li-ion |
| Nominal voltage | 3.6 V |
| Diameter | 26 mm |
| Height | 65 mm |
| Typical capacity | 4000–5500 mAh |
| Rechargeable | Yes |
| Also sold as | INR26650, IMR26650 |
Equivalent batteries
These codes describe the same physical cell as the 26650.
Can I replace 26650 with…
Cells that fit the same space but differ in chemistry or voltage.
Check before you swap. Batteries with similar dimensions are not always interchangeable with the 26650. Always verify voltage, chemistry and the requirements printed in your device manual before fitting a replacement.
26650 questions
What batteries are equivalent to the 26650?
The 26650 is sold as INR26650, IMR26650. All of these describe the same 26 × 65 mm li-ion cell at 3.6 V.
Can I use a 18650 instead of a 26650?
In many low-drain devices, yes — the sizes match. Check the voltage and chemistry against your device's requirement first, because a small voltage difference can matter in calibrated equipment.
How long does a 26650 last?
A 26650 holds a typical 4000–5500 mAh. Real runtime depends entirely on how much current your device draws and whether it is used continuously.
Is the 26650 rechargeable?
Yes, the 26650 is a rechargeable cell and must be charged in a charger designed for its chemistry.
Related batteries
Other cylindricals in the index.