Comparison · Chargers
Choetech QC 18W Q5003 or 12.6 V 3 A 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 QC 18W Q5003 (3.9 A vs. 3.23); Temperature rise: Choetech QC 18W Q5003 (81 °C vs. 102.8); Price: Choetech QC 18W Q5003 (2.54 $ vs. 8.13).
| Model |  Choetech QC 18W Q50032020Read review → |  12.6 V 3 A charger2017Read review → |
|---|---|---|
| Test current, A | 3.9 | 3.23 |
| Under load, V | 4.93 | 12.68 |
| Temperature rise, °C | 81 | 102.8 |
| Price, $ | 2.54 | 8.13 |
| Review conclusion | Recommended | With reservations |
Only in one review: Voltage 12 V (Choetech QC 18W Q5003); Current 3 A (Choetech QC 18W Q5003); Power 18 W (Choetech QC 18W Q5003); Ripple 150 mV (Choetech QC 18W Q5003); Protection 3.9 A (Choetech QC 18W Q5003).
Choetech QC 18W Q5003: It handles load steadily and runs cool, but the claimed 3 A is overstated and it does not compensate for cable voltage drop.
12.6 V 3 A charger: The inexpensive charger works, but its voltage and current are too high, it overheats, and it needs modification.
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.
