Comparison · Batteries

Tenpower INR21700-50SG or HJ802540

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: Test current: Tenpower INR21700-50SG (20 A vs. 10); Temperature rise: HJ802540 (62 °C vs. 71.4).

Model	Tenpower INR21700-50SG2026Read review →	HJ8025402020Read review →
Test current, A	20	10
Temperature rise, °C	71.4	62
Review conclusion	Recommended	Recommended

Only in one review: Current 20 A (Tenpower INR21700-50SG); Capacity 4931 mAh (Tenpower INR21700-50SG); Capacity at high current 680 mAh (HJ802540); Resistance 21 mΩ (HJ802540).

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.

HJ802540: The cell delivered up to 10 A, and its capacity exceeded the rated figure.

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.