Comparison · Batteries

NB-4L or UltraFire TR17670 1800mAh 3.7V

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: UltraFire TR17670 1800mAh 3.7V (1320 mAh vs. 723); Price: NB-4L (4.35 $ vs. 9).

Model	NB-4LCanon · 2015Read review →	UltraFire TR17670 1800mAh 3.7V2014Read review →
Capacity, mAh	723	1320
Weight, g	16	36
Price, $	4.35	9
Review conclusion	Recommended	Not recommended

Only in one review: Voltage 3.7 V (UltraFire TR17670 1800mAh 3.7V); Test current 1.8 A (UltraFire TR17670 1800mAh 3.7V).

NB-4L: Capacity measured 723 mAh; the author considers the battery quite decent.

UltraFire TR17670 1800mAh 3.7V: Capacity was below the rating and the promised protection circuit was absent; the author would not recommend buying them.

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.