The AIMS Power 2000W Inverter Charger (ETL) is the better 12V inverter overall, rated 3.8 to 3.1. The AIMS Power 2000W Inverter Charger (ETL) leads on value and efficiency. The Magnum Energy MS2012 wins on idle draw. The AIMS Power 2000W Inverter Charger (ETL) costs $1,041.43 less ($1,069 vs $2,110.43).
A listed low-frequency inverter-charger for cabins, backup and RVs with hard-starting motor loads. It is heavy and idles high, but few listed units surge this long.
Amazon $1,069For full-time RVers who want a rugged low-frequency inverter-charger that will start air conditioners and charge fast from a generator.
Amazon $2,110.43Prices 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.
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 | AIMS Power 2000W Inverter Charger (ETL) | Magnum Energy MS2012 |
|---|---|---|
| Overall rating | 3.8/5 | 3.1/5 |
| Value 30% | 62 $0.53 per continuous watt | 0 $1.05 per continuous watt |
| Idle draw 15% | 40 2.3 A idle (about 28 W) with nothing plugged in | 50 2.1 A idle (about 25 W) with nothing plugged in |
| Safety listing 15% | 100 ETL listed to UL 458 and CSA C22.2 No. 107.1 | 100 ETL listed to UL/cUL 458, CSA C22.2 No. 107.1-01; meets KKK-A-1822E |
| Warranty 15% | 50 3-year warranty | 50 3-year warranty |
| Features 15% | 65 optional remote, app add-on, lithium charge profile, hardwire terminal | 65 optional remote, app add-on, lithium charge profile, hardwire terminal |
| Efficiency 10% | 78 92% peak efficiency (maker rating) | 62 90.6% peak efficiency (maker rating) |
| AIMS Power 2000W Inverter Charger (ETL) | Magnum Energy MS2012 | |
|---|---|---|
| Output | ||
| Type | Pure sine wave inverter-charger | Pure sine wave inverter-charger |
| Continuous power | 2,000 W | 2,000 W |
| Surge power | 6,000 W for 20 s | 3,300 W for 5 s |
| DC input range | 10 to 16 V | 9 to 16.8 V |
| Idle draw | 2.3 A (28 W) | 2.1 A (25 W) |
| Power-saving draw | 1.1 A | 0.7 A |
| Peak efficiency | 92% | 90.6% |
| Connections | ||
| AC outlets | 2 | 0 |
| GFCI outlets | Yes | No |
| Hardwire terminal | Yes | Yes |
| USB ports | None | None |
| Transfer switch | Yes | Yes |
| Charger | 70 A | 100 A |
| Lithium charge profile | Yes | Yes |
| Parallel units | No | No |
| Control and build | ||
| Remote | Optional extra | Optional extra |
| App | Optional add-on | Optional add-on |
| Display | No | No |
| Safety listing | ETL listed to UL 458 and CSA C22.2 No. 107.1 | ETL listed to UL/cUL 458, CSA C22.2 No. 107.1-01; meets KKK-A-1822E |
| Cooling | load-controlled fan | fan |
| Dimensions | 15.35 x 11 x 7 in | 13.75 x 12.65 x 8.0 in (34.9 x 32.1 x 20.3 cm) |
| Weight | 47.4 lb | 42 lb |
| Warranty | 3 years | 3 years |
| Released | 2015-09 | - |
