CGA-DU21 or Panasonic NCR18500A

In brief: Based on review measurements: Capacity: CGA-DU21 (2073 mAh vs. 2000); Price: CGA-DU21 (15.19 $ vs. 19.59).

Model	CGA-DU21Panasonic · 2015Read review →	Panasonic NCR18500A2016Read review →
Capacity, mAh	2073	2000
Price, $	15.19	19.59
Review conclusion	Recommended	Recommended

Only in one review: Voltage 4.2 V (Panasonic NCR18500A); Test current 3.8 A (Panasonic NCR18500A).

CGA-DU21: It delivered 2,073 mAh at a 500 mA discharge; in the second cycle, the author discharged it at 1.5 A.

Panasonic NCR18500A: Both cells delivered nearly 2000 mAh in the standard test, exceeding the stated capacity.

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.

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