Comparison · Chargers
U2 or Choetech QC 18W Q5003
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. 2.3); Price: Choetech QC 18W Q5003 (2.54 $ vs. 13.39).
| Model |  U2Vapcell · 2022Read review → |  Choetech QC 18W Q50032020Read review → |
|---|---|---|
| Current, A | 2 | 3 |
| Test current, A | 2.3 | 3.9 |
| Price, $ | 13.39 | 2.54 |
| Review conclusion | With reservations | Recommended |
Only in one review: Voltage 12 V (Choetech QC 18W Q5003); Power 18 W (Choetech QC 18W Q5003); Under load 4.93 V (Choetech QC 18W Q5003); Ripple 150 mV (Choetech QC 18W Q5003); Protection 3.9 A (Choetech QC 18W Q5003); Temperature rise 81 °C (Choetech QC 18W Q5003).
U2: Supports four battery types and charging up to 2 A, but has current spikes and may overcharge LiFePO4 after a power interruption.
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.
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.
