Rich Solar NOVA SUPERCHARGER 3K 12V
#16 in Inverter-chargersFull review
For larger RVs and boats that want 3000 W of AC and a fast shore-power charger in one box.
Rich Solar $799.99$799.99
The Rich Solar NOVA SUPERCHARGER 3K 12V is the better 12V inverter overall, rated 3.6 to 3.4. The Rich Solar NOVA SUPERCHARGER 3K 12V leads on value, features and efficiency. The Samlex EVO-3012 wins on safety listing. The Rich Solar NOVA SUPERCHARGER 3K 12V costs $1,246.01 less ($799.99 vs $2,046).
Samlex EVO-3012
#25 in Inverter-chargersFull review
For larger RVs and boats that want a listed inverter-charger with fast lithium charging and generator support.
Amazon $2,046$2,046
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 Rich Solar NOVA SUPERCHARGER 3K 12V for value ($0.27 per continuous watt vs $0.68 per continuous watt), features (optional remote, app add-on, lithium charge profile, hardwire terminal vs optional remote, lithium charge profile, hardwire terminal; no app) and efficiency (91% peak efficiency (maker rating) vs 90% peak efficiency (maker rating)).
- Choose the Samlex EVO-3012 for safety listing (ETL listed to ANSI/UL 1741 and 458 (with Marine Supplement) and CAN/CSA C22.2 No. 107.1-16 vs no UL 458 or UL 1741 listing stated).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every inverter-chargers 12V inverter; a clear win is highlighted. How we rank explains each one.
| Factor weight | Rich Solar NOVA SUPERCHARGER 3K 12V | Samlex EVO-3012 |
|---|---|---|
| Overall rating | 3.6/5 | 3.4/5 |
| Value 30% | 98 $0.27 per continuous watt | 42 $0.68 per continuous watt |
| Idle draw 15% | 50 idle draw not published (neutral score used) | 33 2.5 A idle (about 30 W) with nothing plugged in |
| Safety listing 15% | 0 no UL 458 or UL 1741 listing stated | 100 ETL listed to ANSI/UL 1741 and 458 (with Marine Supplement) and CAN/CSA C22.2 No. 107.1-16 |
| Warranty 15% | 50 warranty not published (neutral score used) | 50 3-year warranty |
| Features 15% | 65 optional remote, app add-on, lithium charge profile, hardwire terminal | 52 optional remote, lithium charge profile, hardwire terminal; no app |
| Efficiency 10% | 67 91% peak efficiency (maker rating) | 56 90% peak efficiency (maker rating) |
Specifications
| Rich Solar NOVA SUPERCHARGER 3K 12V | Samlex EVO-3012 | |
|---|---|---|
| Output | ||
| Type | Pure sine wave inverter-charger | Pure sine wave inverter-charger |
| Continuous power | 3,000 W | 3,000 W |
| Surge power | 6,000 W for 5 s | 6,000 W for 100 ms |
| DC input range | 10.5 to 18 V | 9.1 to 17 V |
| Idle draw | - | 2.5 A (30 W) |
| Power-saving draw | - | 0.7 A |
| Peak efficiency | 91% | 90% |
| Connections | ||
| AC outlets | - | 0 |
| GFCI outlets | No | No |
| Hardwire terminal | Yes | Yes |
| USB ports | - | None |
| Transfer switch | Yes | Yes |
| Charger | 150 A | 130 A |
| Lithium charge profile | Yes | Yes |
| Parallel units | - | No |
| Control and build | ||
| Remote | Optional extra | Optional extra |
| App | Optional add-on | No |
| Display | No | No |
| Safety listing | No | ETL listed to ANSI/UL 1741 and 458 (with Marine Supplement) and CAN/CSA C22.2 No. 107.1-16 |
| Cooling | - | fan |
| Dimensions | 15.4 x 12.0 x 4.8 in | 325 x 426 x 207 mm |
| Weight | 18.5 lb | 64 lb |
| Warranty | - | 3 years |