Comparison · Batteries

Vapcell T20 21700 2000mAh 40A/60A or CGA-DU21

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: These devices have no measurements in common that would show one is better than the other. Compare the review conclusions below.

Model	Vapcell T20 21700 2000mAh 40A/60A2021Read review →	CGA-DU21Panasonic · 2015Read review →
Review conclusion	With reservations	Recommended

Only in one review: Voltage 3.6 V (Vapcell T20 21700 2000mAh 40A/60A); Current 40 A (Vapcell T20 21700 2000mAh 40A/60A); Capacity 2073 mAh (CGA-DU21); Temperature rise 67 °C (Vapcell T20 21700 2000mAh 40A/60A); Price 15.19 $ (CGA-DU21).

Vapcell T20 21700 2000mAh 40A/60A: They deliver up to 40 A well, but 2000 mAh is a low capacity for the 21700 format.

CGA-DU21: It delivered 2,073 mAh at a 500 mA discharge; in the second cycle, the author discharged it at 1.5 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.