Samlex PST-2000-48
#1 in Over 1,500 WFull review
For a 48 V cabin or shop that needs a UL-listed 2,000 W inverter with outlets and a hardwire terminal.
The Samlex PST-2000-48 is the better 48V inverter overall, rated 3.5 to 2.6. The Samlex PST-2000-48 leads on safety listing, warranty and features. The Cotek SP-2000-148 wins on efficiency.
Cotek SP-2000-148
#15 in Over 1,500 WFull review
A plain, efficient 2,000 W inverter for a 48 V cabin or shop bank that plugs loads in directly.
Amazon $754$754
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-2000-48 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), warranty (3-year warranty vs 2-year warranty) and features (optional remote, hardwire terminal; no app vs optional remote; no app).
- Choose the Cotek SP-2000-148 for efficiency (94% peak efficiency (maker rating) vs 90% peak efficiency (maker rating)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every over 1,500 W 48V inverter; a clear win is highlighted. How we rank explains each one.
| Factor weight | Samlex PST-2000-48 | Cotek SP-2000-148 |
|---|---|---|
| Overall rating | 3.5/5 | 2.6/5 |
| Value 30% | 50 no current price (neutral score used) | 20 $0.38 per continuous watt |
| Idle draw 15% | 65 24 W idle with nothing plugged in | 65 24 W idle 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% | 20 optional remote, hardwire terminal; no app | 10 optional remote; no app |
| Efficiency 10% | 56 90% peak efficiency (maker rating) | 100 94% peak efficiency (maker rating) |
Specifications
| Samlex PST-2000-48 | Cotek SP-2000-148 | |
|---|---|---|
| Output | ||
| Type | Pure sine wave inverter | Pure sine wave inverter |
| AC output | 120 V | 120 V |
| Continuous power | 2,000 W | 2,000 W |
| Surge power | 3,500 W | 3,500 W for 3 s |
| DC input range | 42 to 64 V | 42 to 66 V |
| Idle draw | 24 W (0.5 A at 48 V) | 24 W (0.5 A at 48 V) |
| Power-saving draw | - | 2.4 W |
| Peak efficiency | 90% | 94% |
| Connections | ||
| AC outlets | 2 | 2 |
| GFCI outlets | Yes | Yes |
| Hardwire terminal | Yes | 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 | 263 x 468 x 106 mm (10.35 x 18.43 x 4.16 in) | 248 x 83 x 443 mm (9.8 x 3.3 x 17.4 in) |
| Weight | 15.6 lb | 11.6 lb |
| Warranty | 3 years | 2 years |