INR18650-26ME (Tenpower) 18650 Li-Ion 2600mAh
Tenpower

INR18650-26ME

18650 Li-Ion 2600mAh rated
100%
of rated capacity
at 200mA
9
independent tests

This battery delivered 100% of its rated capacity (2587mAh tested vs 2600mAh rated) at 200mA. Higher current tests naturally yield lower capacity due to increased internal resistance.

200mA Feb 12, 2026 lowest current
2587mAh 100% of rated
1A Feb 12, 2026
2497mAh
2A Feb 12, 2026
2478mAh
3A Feb 14, 2026
2511mAh
4A Feb 14, 2026
2453mAh
5A Feb 12, 2026
2501mAh
10A Feb 15, 2026
2446mAh
15A Feb 12, 2026
2463mAh
20A Feb 15, 2026
1967mAh
Capacity vs Current
Rated capacity 2.60 Ah
Rated energy 9.62 Wh
Cell voltage - Nominal 3.70 V
Charge cut-off voltage 4.20 V
Discharge cut-off voltage 2.75 V
Standard charge current 1.30 A
Maximum charge current 2.60 A
Maximum discharge current 15 A
Internal resistance ≤ 25 mΩ
Minimum charge temperature 0 °C
Maximum charge temperature 45 °C
Minimum discharge temperature -20 °C
Maximum discharge temperature 60 °C
Volumetric energy density 566 Wh/L
Gravimetric energy density 208 Wh/kg
Diameter (max) 18.60 mm
Height (max) 65.10 mm
Weight ~ 47 g