Comparison · Batteries

Reliance INR21700-RS50 or Vapcell F52

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: Reliance INR21700-RS50 (5200 mAh vs. 5044); Test current: Reliance INR21700-RS50 (40 A vs. 15).

Model	Reliance INR21700-RS502026Read review →	Vapcell F522023Read review →
Current, A	70	15
Capacity, mAh	5200	5044
Test current, A	40	15
Review conclusion	With reservations	Recommended

Only in one review: Voltage 3.6 V (Vapcell F52); Energy 18.23 Wh (Vapcell F52); Resistance 3 mΩ (Reliance INR21700-RS50); Temperature rise 70 °C (Vapcell F52); Weight 72 g (Vapcell F52).

Reliance INR21700-RS50: High capacity and strong results, but they heat up and sag under heavy load; the author preferred EVE for high loads.

Vapcell F52: High-capacity cells with strong output; the author recommends them if the price is right.

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.