Klein Tools ET920 USB Power Meter vs Kill A Watt electricity usage monitor with 35in cord
Overall winner: Klein Tools ET920 USB Power Meter
Key Differences
Klein Tools ET920 (A) is a compact USB power meter that supports both USB-A and USB-C and reports capacity/charge, and it has a lower listed price and many more reviews. Kill A Watt P4498 (B) is a portable electricity usage monitor with a long 35-inch cord and multi-measurement display for mains appliances but has some reported outlet-side reliability concerns
Klein Tools ET920 USB Power Meter
USB power meter for voltage, current, capacity, energy and resistance. Measures 3–20V DC with USB-A (0.05–3A) and USB-C (0.05–5A); monitors multiple parameters. Users note solid utility with simple operation, but report data loss and USB-C issues in some cases
Pros
- multi-parameter monitoring
- supports USB-A and USB-C
- compact diagnostic tool
- easy to use
Cons
- mixed accuracy reports
- data loss reported on some units
- USB-C port malfunctions reported
Kill A Watt electricity usage monitor with 35in cord
Compact power usage monitor that displays volts, current, watts, frequency and power factor. Helps track energy use over time and store min/max readings; handy for remote display with detachable screen. Users report easy setup and usefulness for monitoring portable generators
Pros
- easy to use
- detachable display option
- stores min/max readings
- reads multiple electrical metrics
Cons
- outlet-side failure reported by some users
- mixed feedback on voltage accuracy
Head-to-Head
| Criteria | Winner |
|---|---|
| Price | KLEIN TOOLS |
| Durability | Tie |
| Versatility | KLEIN TOOLS |
| User Reviews | KLEIN TOOLS |