Samlex PST-150-12
#22 in Up to 1,000 WFull review
For a laptop and phone chargers in a car or truck cab. Buy the PST-300-12 if you need any headroom.
The Samlex PST-150-12 is the better 12V inverter overall, rated 2.7 to 2.2. The Samlex PST-120-12 wins on efficiency.
Samlex PST-120-12
#27 in Up to 1,000 WFull review
For powering one laptop or CPAP from a vehicle 12 V socket. Pricey per watt, but clean and tiny.
Amazon $206.29$206.29
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-120-12 for efficiency (88% peak efficiency (maker rating) vs 87% 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-150-12 | Samlex PST-120-12 |
|---|---|---|
| Overall rating | 2.7/5 | 2.2/5 |
| Value 30% | 50 no current price (neutral score used) | 0 $1.72 per continuous watt |
| Idle draw 15% | 67 0.5 A idle (about 6 W) with nothing plugged in | 67 0.5 A idle (about 6 W) with nothing plugged in |
| Safety listing 15% | 0 no UL 458 or UL 1741 listing stated | 0 no UL 458 or UL 1741 listing stated |
| Warranty 15% | 50 3-year warranty | 50 3-year warranty |
| Features 15% | 0 outlets only | 0 outlets only |
| Efficiency 10% | 22 87% peak efficiency (maker rating) | 33 88% peak efficiency (maker rating) |
Specifications
| Samlex PST-150-12 | Samlex PST-120-12 | |
|---|---|---|
| Output | ||
| Type | Pure sine wave inverter | Pure sine wave inverter |
| Continuous power | 150 W | 120 W |
| Surge power | 300 W for 8 ms | 120 W |
| DC input range | 10.5 to 16.5 V | 10 to 16.5 V |
| Idle draw | 0.5 A (6 W) | 0.5 A (6 W) |
| Peak efficiency | 87% | 88% |
| Connections | ||
| AC outlets | 2 | 1 |
| GFCI outlets | Yes | No |
| Hardwire terminal | No | No |
| USB ports | None | 1 |
| Transfer switch | No | No |
| Parallel units | No | No |
| Control and build | ||
| Remote | No | No |
| App | No | No |
| Display | No | No |
| Safety listing | No | No |
| Cooling | fan | fan |
| Dimensions | 155 x 211 x 65.5 mm | 105 x 189 x 30.5 mm (4.13 x 7.44 x 1.2 in) |
| Weight | 2.8 lb | 1 lb |
| Warranty | 3 years | 3 years |