Comparison · Batteries

Tenpower INR21700-50SG or Basen BS26003

Two models side by side: measurements taken by the author in their reviews, and their conclusions. The better value in each row is highlighted.

In brief: Based on review measurements: Capacity: Tenpower INR21700-50SG (4931 mAh vs. 4800); Test current: Basen BS26003 (30 A vs. 20); Temperature rise: Tenpower INR21700-50SG (71.4 °C vs. 97).

Model	Tenpower INR21700-50SG2026Read review →	Basen BS260032020Read review →
Capacity, mAh	4931	4800
Test current, A	20	30
Temperature rise, °C	71.4	97
Review conclusion	Recommended	With reservations

Only in one review: Current 20 A (Tenpower INR21700-50SG); Capacity at high current 4310 mAh (Basen BS26003); Weight 90 g (Basen BS26003); Price 6.39 $ (Basen BS26003).

Tenpower INR21700-50SG: Mid-range cells without standout current or capacity, but they work well and may, in the author's view, deliver over 20 A.

Basen BS26003: Decent general-purpose cells, but not high-current ones; high loads cause strain and substantial voltage sag.

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.