EVE

INR21700-40PL 4000mAh 21700 Li-Ion Battery

21700 Li-Ion 4000mAh rated
View in Test Results ← Back to Catalog
103%
of rated capacity
at 200mA
10
independent tests
7 more planned
65.0g
avg weight
4 measurements
Performance

This battery delivered 103% of its rated capacity (4130mAh tested vs 4000mAh rated) at 200mA. Higher current tests naturally yield lower capacity due to increased internal resistance.

200mA Sep 22, 2026 lowest current
4130mAh 103% of rated
500mA Sep 20, 2026
4136mAh
1A Sep 20, 2026
4066mAh
2A Sep 20, 2026
4006mAh
3A Sep 20, 2026
3961mAh
4A Sep 20, 2026
3991mAh
5A Sep 20, 2026
4003mAh
10A Sep 20, 2026
4009mAh
15A Sep 22, 2026
4049mAh
20A Sep 22, 2026
4071mAh
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
50A Planned test
Not tested yet
60A Planned test
Not tested yet
Discharge Curves
Capacity vs Current
Specifications
Rated capacity 4 Ah
Cell voltage - Nominal 3.60 V
Charge cut-off voltage 4.20 V
Discharge cut-off voltage 2.50 V
Standard charge current 2 A
Maximum charge current 8 A
Maximum discharge current 70 A
Internal resistance ≤ 5 mΩ
Minimum charge temperature 0 °C
Maximum charge temperature 60 °C
Minimum discharge temperature -20 °C
Maximum discharge temperature 80 °C
Diameter (max) 21.25 mm
Height (max) 70.30 mm
Weight ~ 67 g
Weight Distribution
4 measurements
Mdn
Avg
Min
64.79g
Median
64.99g
Average
65.00g
Max
65.22g
Std Dev
0.18g