INR-21700-P42A (Molicel) 21700 Li-Ion 4200mAh
Molicel

INR-21700-P42A 4200mAh 21700 Li-Ion Battery

21700 Li-Ion 4200mAh rated
View in Test Results ← Back to Catalog
96%
of rated capacity
at 5A
4
independent tests
11 more planned
Performance

This battery delivered 96% of its rated capacity (4042mAh tested vs 4200mAh rated) at 5A. Higher current tests naturally yield lower capacity due to increased internal resistance.

200mA Planned test
Not tested yet
500mA Planned test
Not tested yet
1A Planned test
Not tested yet
2A Planned test
Not tested yet
3A Planned test
Not tested yet
4A Planned test
Not tested yet
5A Aug 11, 2026 lowest current
4043mAh 96% of rated
10A Aug 11, 2026
3903mAh
15A Aug 11, 2026
4037mAh
20A Aug 11, 2026
3887mAh
25A Planned test
Not tested yet
30A Planned test
Not tested yet
35A Planned test
Not tested yet
40A Planned test
Not tested yet
45A Planned test
Not tested yet
Discharge Curves
Capacity vs Current
Specifications
Rated capacity 4.20 Ah
Rated energy 15.50 Wh
Cell voltage - Nominal 3.60 V
Charge cut-off voltage 4.20 V
Discharge cut-off voltage 2.50 V
Standard charge current 4.20 A
Maximum discharge current 45 A
Internal resistance ≤ 10 mΩ
Minimum charge temperature 0 °C
Maximum charge temperature 45 °C
Minimum discharge temperature -40 °C
Maximum discharge temperature 60 °C
Volumetric energy density 615 Wh/L
Gravimetric energy density 230 Wh/kg
Diameter (max) 21.70 mm
Height (max) 70.20 mm
Weight ~ 70 g