Comparison · Batteries

Vapcell T39 21700 or Samsung INR18650-20S

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: Test current: Vapcell T39 21700 (35 A vs. 30); Resistance: Vapcell T39 21700 (3 mΩ vs. 7.5); Temperature rise: Vapcell T39 21700 (82 °C vs. 84).

Model	Vapcell T39 217002023Read review →	Samsung INR18650-20S2019Read review →
Current, A	35	30
Test current, A	35	30
Resistance, mΩ	3	7.5
Temperature rise, °C	82	84
Review conclusion	Recommended	Recommended

Only in one review: Voltage 3.6 V (Vapcell T39 21700).

Vapcell T39 21700: The high-current cells showed good capacity and low impedance, but the two samples were not quite consistent.

Samsung INR18650-20S: At 30 A it reached only 84°C; the author notes it often costs less than the VTC4.

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.