Samlex NTX-600-12
#19 in Up to 1,000 WFull review
For small RVs and vans that want a listed 600 W inverter for electronics and a small fridge.
The Samlex NTX-600-12 is the better 12V inverter overall, rated 3.0 to 2.8. The Samlex NTX-600-12 leads on efficiency. The Samlex PST-600-12 wins on idle draw, warranty and features.
Samlex PST-600-12
#21 in Up to 1,000 WFull review
For boats and RVs that need a listed 600 W inverter with GFCI outlets for electronics and a small fridge.
Amazon $315.83$315.83
Prices were last checked October 24, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Samlex NTX-600-12 for efficiency (91% peak efficiency (maker rating) vs 85% peak efficiency (maker rating)).
- Choose the Samlex PST-600-12 for idle draw (0.6 A idle (about 7.2 W) with nothing plugged in vs 0.9 A idle (about 10.8 W) with nothing plugged in), warranty (3-year warranty vs 2-year warranty) and features (optional remote; no app vs outlets only).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every up to 1,000 W 12V inverter; a clear win is highlighted. How we rank explains each one.
| Factor weight | Samlex NTX-600-12 | Samlex PST-600-12 |
|---|---|---|
| Overall rating | 3.0/5 | 2.8/5 |
| Value 30% | 50 no current price (neutral score used) | 15 $0.53 per continuous watt |
| Idle draw 15% | 13 0.9 A idle (about 10.8 W) with nothing plugged in | 53 0.6 A idle (about 7.2 W) with nothing plugged in |
| Safety listing 15% | 100 Intertek ETL listed; conforms to UL 458 and certified to CSA C22.2 No. 107.1 | 100 Intertek ETL listed; conforms to UL 458 and certified to CSA C22.2 No. 107.1 |
| Warranty 15% | 25 2-year warranty | 50 3-year warranty |
| Features 15% | 0 outlets only | 12 optional remote; no app |
| Efficiency 10% | 67 91% peak efficiency (maker rating) | 0 85% peak efficiency (maker rating) |
Specifications
| Samlex NTX-600-12 | Samlex PST-600-12 | |
|---|---|---|
| Output | ||
| Type | Pure sine wave inverter | Pure sine wave inverter |
| Continuous power | 600 W | 600 W |
| Surge power | 1,200 W for 1 s | 1,000 W |
| DC input range | 10.5 to 16.3 V | 10.7 to 16.5 V |
| Idle draw | 0.9 A (10.8 W) | 0.6 A (7.2 W) |
| Peak efficiency | 91% | 85% |
| Connections | ||
| AC outlets | 2 | 2 |
| GFCI outlets | No | Yes |
| Hardwire terminal | No | No |
| USB ports | 1 | None |
| Transfer switch | No | No |
| Parallel units | No | No |
| Control and build | ||
| Remote | No | Optional extra |
| App | No | No |
| Display | No | No |
| Safety listing | Intertek ETL listed; conforms to UL 458 and certified to CSA C22.2 No. 107.1 | Intertek ETL listed; conforms to UL 458 and certified to CSA C22.2 No. 107.1 |
| Cooling | load-controlled fan | fan |
| Dimensions | 155 x 254 x 59 mm | 238 x 276.2 x 82 mm (9.37 x 10.87 x 3.23 in) |
| Weight | 2.4 lb | 5.9 lb |
| Warranty | 2 years | 3 years |