The Xantrex Freedom XC Pro 3000 is the better 12V inverter overall, rated 3.7 to 3.5. The Xantrex Freedom XC Pro 3000 leads on features and efficiency. The Magnum Energy MS2812 wins on warranty.
One of the lightest listed 3000 W inverter-chargers, for RVs that want to run an air conditioner and charge a big lithium bank fast. Worth the price over the Freedom SW unless you need stacking.
Amazon $1,506.99For full-time RVers who want a rugged low-frequency inverter-charger that will start air conditioners and charge fast from a generator.
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.
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 | Xantrex Freedom XC Pro 3000 | Magnum Energy MS2812 |
|---|---|---|
| Overall rating | 3.7/5 | 3.5/5 |
| Value 30% | 66 $0.50 per continuous watt | 50 no current price (neutral score used) |
| 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% | 100 ETL listed to CSA 107.1, UL 458 and UL 458 Marine Supplement | 100 ETL listed to UL/cUL 458, CSA C22.2 No. 107.1-01; meets KKK-A-1822E |
| Warranty 15% | 25 2-year warranty | 50 3-year warranty |
| Features 15% | 75 optional remote, app add-on, lithium charge profile, hardwire terminal, display | 65 optional remote, app add-on, lithium charge profile, hardwire terminal |
| Efficiency 10% | 67 91% peak efficiency (maker rating) | 56 90% peak efficiency (maker rating) |
| Xantrex Freedom XC Pro 3000 | Magnum Energy MS2812 | |
|---|---|---|
| Output | ||
| Type | Pure sine wave inverter-charger | Pure sine wave inverter-charger |
| Continuous power | 3,000 W | 2,800 W |
| Surge power | 6,000 W for 5 s | 3,900 W for 5 s |
| DC input range | 10.1 to 18 V | 9 to 16.8 V |
| Idle draw | - | 2.5 A (30 W) |
| Power-saving draw | - | 0.7 A |
| Peak efficiency | 91% | 90% |
| Connections | ||
| AC outlets | 0 | 0 |
| GFCI outlets | No | No |
| Hardwire terminal | Yes | Yes |
| USB ports | None | None |
| Transfer switch | Yes | Yes |
| Charger | 150 A | 125 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 | Yes | No |
| Safety listing | ETL listed to CSA 107.1, UL 458 and UL 458 Marine Supplement | ETL listed to UL/cUL 458, CSA C22.2 No. 107.1-01; meets KKK-A-1822E |
| Cooling | load-controlled fan | fan |
| Dimensions | 15.4 x 10.8 x 4.9 in (390 x 275 x 125 mm), 12.0 in wide with flanges | 13.75 x 12.65 x 8.0 in (34.9 x 32.1 x 20.3 cm) |
| Weight | 18.6 lb | 55 lb |
| Warranty | 2 years | 3 years |
| Released | 2020-04 | - |
