Comparison · Batteries

Vapcell N40 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. 4000); Test current: LiitoKala Lii-40A 21700 4000mAh (30 A vs. 10).

Model	Vapcell N402023Read review →	LiitoKala Lii-40A 21700 4000mAh2018Read review →
Voltage, V	3.6	3.7
Current, A	10	40
Capacity, mAh	4000	4074
Test current, A	10	30
Review conclusion	Recommended	With reservations

Only in one review: Capacity at high current 4041 mAh (LiitoKala Lii-40A 21700 4000mAh); Energy 14.972 Wh (LiitoKala Lii-40A 21700 4000mAh); Resistance 15 mΩ (Vapcell N40); Temperature rise 90 °C (LiitoKala Lii-40A 21700 4000mAh); Weight 48 g (Vapcell N40).

Vapcell N40: Genuine 4000 mAh cells with excellent consistency, though the author advises against using them at high currents.

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.