Comparison · Batteries

Molicel INR21700-P42A or LiitoKala Lii-40A 21700 4000mAh

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: LiitoKala Lii-40A 21700 4000mAh (4074 mAh vs. 4060); Capacity at high current: LiitoKala Lii-40A 21700 4000mAh (4041 mAh vs. 3945); Test current: Molicel INR21700-P42A (36.4 A vs. 30); Energy: LiitoKala Lii-40A 21700 4000mAh (14.972 Wh vs. 14.86); Temperature rise: LiitoKala Lii-40A 21700 4000mAh (90 °C vs. 102).

Model	Molicel INR21700-P42A2019Read review →	LiitoKala Lii-40A 21700 4000mAh2018Read review →
Current, A	45	40
Capacity, mAh	4060	4074
Capacity at high current, mAh	3945	4041
Test current, A	36.4	30
Energy, Wh	14.86	14.972
Temperature rise, °C	102	90
Review conclusion	With reservations	With reservations

Only in one review: Voltage 3.7 V (LiitoKala Lii-40A 21700 4000mAh); Resistance 9.5 mΩ (Molicel INR21700-P42A).

Molicel INR21700-P42A: It performed well and slightly beat the Samsung INR21700-40T, but the author considers it too expensive.

LiitoKala Lii-40A 21700 4000mAh: Capacity meets the rating, but the claimed continuous discharge current is questionable.

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.