Comparison · Batteries

Vapcell T20 21700 2000mAh 40A/60A or Samsung INR 18650-20S

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: Temperature rise: Vapcell T20 21700 2000mAh 40A/60A (67 °C vs. 84).

Model	Vapcell T20 21700 2000mAh 40A/60A2021Read review →	Samsung INR 18650-20S2019Read review →
Temperature rise, °C	67	84
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 2021 mAh (Samsung INR 18650-20S); Capacity at high current 1990 mAh (Samsung INR 18650-20S); Test current 30 A (Samsung INR 18650-20S); Energy 6.815 Wh (Samsung INR 18650-20S); Resistance 7 mΩ (Samsung INR 18650-20S).

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

Samsung INR 18650-20S: The high-current cell delivered well with modest heating, and the author unequivocally recommends it.

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.