Comparison · Chargers
Choetech QC 18W Q5003 or BlitzWolf BW-S4
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: BlitzWolf BW-S4 (10 A vs. 3.9); Ripple: Choetech QC 18W Q5003 (150 mV vs. 200).
| Model |  Choetech QC 18W Q50032020Read review → |  BlitzWolf BW-S42017Read review → |
|---|---|---|
| Voltage, V | 12 | 5 |
| Current, A | 3 | 10 |
| Test current, A | 3.9 | 10 |
| Under load, V | 4.93 | 5.04 |
| Ripple, mV | 150 | 200 |
| Protection, A | 3.9 | 2.9 |
| Review conclusion | Recommended | Recommended |
Only in one review: Power 18 W (Choetech QC 18W Q5003); Efficiency 89 % (BlitzWolf BW-S4); Temperature rise 81 °C (Choetech QC 18W Q5003); Price 2.54 $ (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.
BlitzWolf BW-S4: It delivers the rated 10 A efficiently without overheating; the author liked it, though ripple is somewhat high.
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.
