Samlex NTX-1500-12
#13 in 1,100 to 2,000 WFull review
For RVs and vans that want a listed inverter for a microwave or coffee maker at a fair price.
Amazon $422.50$422.50
The Samlex NTX-1500-12 is the better 12V inverter overall, rated 3.4 to 3.2. The Samlex NTX-1500-12 leads on safety listing and idle draw. The Giandel GS-1500SCR 1500W Pure Sine wins on value and features. The Giandel GS-1500SCR 1500W Pure Sine costs $235.68 less ($186.82 vs $422.50).
Giandel GS-1500SCR 1500W Pure Sine
#26 in 1,100 to 2,000 WFull review
A well-featured 1500 W unit for RVs with a lithium battery, thanks to GFCI outlets and adjustable cutoff. Switch it off when not in use; its idle draw is high.
Amazon $208.82 Giandel $186.82$186.82
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-1500-12 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) and idle draw (0.8 A idle (about 9.6 W) with nothing plugged in vs 2 A idle (about 24 W) with nothing plugged in).
- Choose the Giandel GS-1500SCR 1500W Pure Sine for value ($0.12 per continuous watt vs $0.28 per continuous watt) and features (remote included, display; no app vs remote included; no app).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 1,100 to 2,000 W 12V inverter; a clear win is highlighted. How we rank explains each one.
| Factor weight | Samlex NTX-1500-12 | Giandel GS-1500SCR 1500W Pure Sine |
|---|---|---|
| Overall rating | 3.4/5 | 3.2/5 |
| Value 30% | 47 $0.28 per continuous watt | 90 $0.12 per continuous watt |
| Idle draw 15% | 80 0.8 A idle (about 9.6 W) with nothing plugged in | 0 2 A idle (about 24 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% | 25 2-year warranty | 50 warranty not published (neutral score used) |
| Features 15% | 25 remote included; no app | 42 remote included, display; no app |
| Efficiency 10% | 61 90.5% peak efficiency (maker rating) | 67 91% peak efficiency (maker rating) |
Specifications
| Samlex NTX-1500-12 | Giandel GS-1500SCR 1500W Pure Sine | |
|---|---|---|
| Output | ||
| Type | Pure sine wave inverter | Pure sine wave inverter |
| Continuous power | 1,500 W | 1,500 W |
| Surge power | 3,000 W for 1 s | 3,100 W for 2 s |
| DC input range | 10.5 to 16.3 V | 9.8 to 16 V |
| Idle draw | 0.8 A (9.6 W) | 2 A (24 W) |
| Peak efficiency | 90.5% | 91% |
| Connections | ||
| AC outlets | 2 | 2 |
| GFCI outlets | Yes | Yes |
| Hardwire terminal | No | - |
| USB ports | None | 1 |
| Transfer switch | No | No |
| Parallel units | No | No |
| Control and build | ||
| Remote | Included | Included |
| App | No | No |
| Display | No | Yes |
| Safety listing | Intertek ETL listed; conforms to UL 458 and certified to CSA C22.2 No. 107.1 | No |
| Cooling | load-controlled fan | - |
| Dimensions | 216 x 333 x 92 mm | - |
| Weight | 7.8 lb | - |
| Warranty | 2 years | - |