Comparison · Batteries

33140 15Ah LiFePO4 cell or 66160 LTO battery cell

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: Resistance: 66160 LTO battery cell (1.33 mΩ vs. 2.25).

Model	33140 15Ah LiFePO4 cell2024Read review →	66160 LTO battery cell2021Read review →
Voltage, V	3.2	2.3
Current, A	30	300
Test current, A	40	40
Resistance, mΩ	2.25	1.33
Review conclusion	With reservations	With reservations

Only in one review: Capacity 27500 mAh (66160 LTO battery cell); Capacity at high current 17300 mAh (66160 LTO battery cell); Energy 58 Wh (66160 LTO battery cell); Temperature rise 34 °C (66160 LTO battery cell); Weight 270 g (33140 15Ah LiFePO4 cell).

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.

66160 LTO battery cell: After being stored discharged, the cell still works, but its capacity drops sharply as load current rises.

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.