EVE 21700 40P 4Ah or Basen BS217A

In brief: Based on review measurements: Test current: EVE 21700 40P 4Ah (35 A vs. 30).

Model	EVE 21700 40P 4Ah2026Read review →	Basen BS217A2020Read review →
Current, A	50	30
Capacity, mAh	4000	4000
Test current, A	35	30
Review conclusion	Recommended	With reservations

Only in one review: Capacity at high current 3826 mAh (Basen BS217A).

EVE 21700 40P 4Ah: The cells delivered their rated capacity but exceeded 100°C at 35 A; the author considers 25–30 A a safer continuous current.

Basen BS217A: The cells suit medium loads but noticeably lag high-current competitors at 20 A.

Figures were taken from the review text and checked against the quoted passages. Measurement conditions differ between reviews, so read the reviews yourself before buying. Prices at the time of review.

Similar comparisons

← All: batteries