The ECO-WORTHY 600W Inverter Charger rates 3.6 among inverter-chargers 12V inverters; the Samlex NTX-600-12 rates 3.0 among up to 1,000 W ones.
A small, cheap UPS-style inverter-charger for a LiFePO4 battery in a camper or for home backup of a fridge or electronics. Specs come only from the Amazon listing.
Amazon $139.99For small RVs and vans that want a listed 600 W inverter for electronics and a small fridge.
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.
These two sit in different size classes (inverter-chargers and up to 1,000 W), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | ECO-WORTHY 600W Inverter Charger | Samlex NTX-600-12 |
|---|---|---|
| Overall rating | 3.6/5 | 3.0/5 |
| Value 30% | 100 $0.23 per continuous watt | 50 no current price (neutral score used) |
| Idle draw 15% | 50 idle draw not published (neutral score used) | 13 0.9 A idle (about 10.8 W) with nothing plugged in |
| Safety listing 15% | 0 no UL 458 or UL 1741 listing stated | 100 Intertek ETL listed; conforms to UL 458 and certified to CSA C22.2 No. 107.1 |
| Warranty 15% | 50 3-year warranty | 25 2-year warranty |
| Features 15% | 68 app, lithium charge profile, display; no remote | 0 outlets only |
| Efficiency 10% | 50 efficiency not published (neutral score used) | 67 91% peak efficiency (maker rating) |
| ECO-WORTHY 600W Inverter Charger | Samlex NTX-600-12 | |
|---|---|---|
| Output | ||
| Type | Pure sine wave inverter-charger | Pure sine wave inverter |
| Continuous power | 600 W | 600 W |
| Surge power | 1,200 W | 1,200 W for 1 s |
| DC input range | - | 10.5 to 16.3 V |
| Idle draw | - | 0.9 A (10.8 W) |
| Peak efficiency | - | 91% |
| Connections | ||
| AC outlets | - | 2 |
| GFCI outlets | - | No |
| Hardwire terminal | - | No |
| USB ports | - | 1 |
| Transfer switch | Yes | No |
| Charger | 30 A | - |
| Lithium charge profile | Yes | - |
| Parallel units | No | No |
| Control and build | ||
| Remote | No | No |
| App | Built in | No |
| Display | Yes | No |
| Safety listing | No | Intertek ETL listed; conforms to UL 458 and certified to CSA C22.2 No. 107.1 |
| Cooling | - | load-controlled fan |
| Dimensions | 12.99 x 7.54 x 3.8 in | 155 x 254 x 59 mm |
| Weight | 6.3 lb | 2.4 lb |
| Warranty | 3 years | 2 years |
