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
The Samlex PST-600-12 is the better 12V inverter overall, rated 2.8 to 2.1. The Samlex PST-600-12 leads on safety listing, idle draw and warranty. The Cotek SP-700-112 wins on efficiency. The Samlex PST-600-12 costs $38.17 less ($315.83 vs $354).
Cotek SP-700-112
#28 in Up to 1,000 WFull review
For campers who want a small, efficient inverter for electronics and a fridge.
Amazon $354$354
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 PST-600-12 for safety listing (Intertek ETL listed; conforms to UL 458 and certified to CSA C22.2 No. 107.1 vs no UL 458 or UL 1741 listing stated), idle draw (0.6 A idle (about 7.2 W) with nothing plugged in vs 1.5 A idle (about 18 W) with nothing plugged in) and warranty (3-year warranty vs 2-year warranty).
- Choose the Cotek SP-700-112 for efficiency (91% peak efficiency (maker rating) vs 85% peak efficiency (maker rating)).
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 PST-600-12 | Cotek SP-700-112 |
|---|---|---|
| Overall rating | 2.8/5 | 2.1/5 |
| Value 30% | 15 $0.53 per continuous watt | 20 $0.51 per continuous watt |
| Idle draw 15% | 53 0.6 A idle (about 7.2 W) with nothing plugged in | 0 1.5 A idle (about 18 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 | 0 no UL 458 or UL 1741 listing stated |
| Warranty 15% | 50 3-year warranty | 25 2-year warranty |
| Features 15% | 12 optional remote; no app | 12 optional remote; no app |
| Efficiency 10% | 0 85% peak efficiency (maker rating) | 67 91% peak efficiency (maker rating) |
Specifications
| Samlex PST-600-12 | Cotek SP-700-112 | |
|---|---|---|
| Output | ||
| Type | Pure sine wave inverter | Pure sine wave inverter |
| Continuous power | 600 W | 700 W |
| Surge power | 1,000 W | 1,230 W for 3 s |
| DC input range | 10.7 to 16.5 V | 10.5 to 16.5 V |
| Idle draw | 0.6 A (7.2 W) | 1.5 A (18 W) |
| Power-saving draw | - | 0.1 A |
| Peak efficiency | 85% | 91% |
| Connections | ||
| AC outlets | 2 | 2 |
| GFCI outlets | Yes | Yes |
| Hardwire terminal | No | No |
| USB ports | None | None |
| Transfer switch | No | No |
| Parallel units | No | No |
| Control and build | ||
| Remote | Optional extra | 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 | No |
| Cooling | fan | load-controlled fan |
| Dimensions | 238 x 276.2 x 82 mm (9.37 x 10.87 x 3.23 in) | 200 x 83 x 330 mm (W x H x D) |
| Weight | 5.9 lb | 5.7 lb |
| Warranty | 3 years | 2 years |