Comparison · Batteries

Samsung INR18650-25S or Samsung ICR18650-26F

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: Samsung INR18650-25S (2507 mAh vs. 2446); Temperature rise: Samsung ICR18650-26F (53 °C vs. 102).

Model	Samsung INR18650-25S2020Read review →	Samsung ICR18650-26F2019Read review →
Current, A	25	5.2
Capacity, mAh	2507	2446
Temperature rise, °C	102	53
Review conclusion	Recommended	With reservations

Only in one review: Test current 5.2 A (Samsung ICR18650-26F).

Samsung INR18650-25S: The 25S performed better than the 25R at 15–20 A and can handle higher currents, though voltage sags at 30 A and above.

Samsung ICR18650-26F: This budget cell is noticeably worn; it suits low-current use, but the author suggests looking for a better model.

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.