Comparison · Chargers

CHOETECH Q4004 or QC 3.0 charger

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: Test current: CHOETECH Q4004 (3.5 A vs. 3.2); Temperature rise: CHOETECH Q4004 (100 °C vs. 115).

Model	CHOETECH Q40042020Read review →	QC 3.0 charger2018Read review →
Test current, A	3.5	3.2
Under load, V	20.22	5.21
Ripple, mV	200	200
Temperature rise, °C	100	115
Review conclusion	With reservations	With reservations

Only in one review: Voltage 20 V (CHOETECH Q4004); Current 3 A (CHOETECH Q4004); Power 60 W (CHOETECH Q4004); In test 70 W (CHOETECH Q4004); Efficiency 90 % (CHOETECH Q4004); Protection 3.5 A (CHOETECH Q4004).

CHOETECH Q4004: Delivers up to 70 W steadily, but gets quite hot at maximum power and has some minor drawbacks.

QC 3.0 charger: It delivers the rated current and regulates voltage well, but overheats and has high ripple at 5 V.

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.