Comparison · Batteries

33140 15Ah LiFePO4 cell or Sony US18650VTC4

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: 33140 15Ah LiFePO4 cell (40 A vs. 15).

Model	33140 15Ah LiFePO4 cell2024Read review →	Sony US18650VTC42016Read review →
Current, A	30	30
Test current, A	40	15
Review conclusion	With reservations	Recommended

Only in one review: Voltage 3.2 V (33140 15Ah LiFePO4 cell); Resistance 2.25 mΩ (33140 15Ah LiFePO4 cell); Weight 270 g (33140 15Ah LiFePO4 cell); Price 13.79 $ (Sony US18650VTC4).

33140 15Ah LiFePO4 cell: Capacity is close to the rating, but its behavior at 40 A puzzled the author, who recommends staying at 0.5–1C.

Sony US18650VTC4: At 1C discharge the cell fully matched its stated specifications; it was also tested at 15 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.