Victron MultiPlus-II 12/4k 120V
For big 12 V lithium builds that want to run an air conditioner without moving to 24 or 48 V. Check that your inspector accepts it before buying, since no UL certificate is published.
DRSA $1,105$1,105
The Victron MultiPlus-II 12/4k 120V is the better 12V inverter overall, rated 4.0 to 3.7. The Victron MultiPlus-II 12/4k 120V leads on warranty, value and efficiency. The Xantrex Freedom XC Pro 3000 wins on safety listing and features. The Victron MultiPlus-II 12/4k 120V costs $401.99 less ($1,105 vs $1,506.99).
Xantrex Freedom XC Pro 3000
#14 in Inverter-chargersFull review
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 $1,506.99$1,506.99
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 Victron MultiPlus-II 12/4k 120V for warranty (5-year warranty vs 2-year warranty), value ($0.33 per continuous watt vs $0.50 per continuous watt) and efficiency (93% peak efficiency (maker rating) vs 91% peak efficiency (maker rating)).
- Choose the Xantrex Freedom XC Pro 3000 for safety listing (ETL listed to CSA 107.1, UL 458 and UL 458 Marine Supplement vs no UL 458 or UL 1741 listing stated) and features (optional remote, app add-on, lithium charge profile, hardwire terminal, display vs optional remote, app add-on, lithium charge profile, hardwire terminal).
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 | Victron MultiPlus-II 12/4k 120V | Xantrex Freedom XC Pro 3000 |
|---|---|---|
| Overall rating | 4.0/5 | 3.7/5 |
| Value 30% | 90 $0.33 per continuous watt | 66 $0.50 per continuous watt |
| Idle draw 15% | 73 1.5 A idle (about 18 W) with nothing plugged in | 50 idle draw not published (neutral score used) |
| Safety listing 15% | 0 no UL 458 or UL 1741 listing stated | 100 ETL listed to CSA 107.1, UL 458 and UL 458 Marine Supplement |
| Warranty 15% | 100 5-year warranty | 25 2-year warranty |
| Features 15% | 65 optional remote, app add-on, lithium charge profile, hardwire terminal | 75 optional remote, app add-on, lithium charge profile, hardwire terminal, display |
| Efficiency 10% | 89 93% peak efficiency (maker rating) | 67 91% peak efficiency (maker rating) |
Specifications
| Victron MultiPlus-II 12/4k 120V | Xantrex Freedom XC Pro 3000 | |
|---|---|---|
| Output | ||
| Type | Pure sine wave inverter-charger | Pure sine wave inverter-charger |
| Continuous power | 3,400 W | 3,000 W |
| Surge power | 6,000 W for 2 s | 6,000 W for 5 s |
| DC input range | 9.5 to 17 V | 10.1 to 18 V |
| Idle draw | 1.5 A (18 W) | - |
| Power-saving draw | 0.3 A | - |
| Peak efficiency | 93% | 91% |
| Connections | ||
| AC outlets | 0 | 0 |
| GFCI outlets | No | No |
| Hardwire terminal | Yes | Yes |
| USB ports | None | None |
| Transfer switch | Yes | Yes |
| Charger | 160 A | 150 A |
| Lithium charge profile | Yes | Yes |
| Parallel units | Yes | No |
| Control and build | ||
| Remote | Optional extra | Optional extra |
| App | Optional add-on | Optional add-on |
| Display | No | Yes |
| Safety listing | No | ETL listed to CSA 107.1, UL 458 and UL 458 Marine Supplement |
| Cooling | fan | load-controlled fan |
| Dimensions | 631 x 277 x 164 mm (24.8 x 10.9 x 6.5 in) | 15.4 x 10.8 x 4.9 in (390 x 275 x 125 mm), 12.0 in wide with flanges |
| Weight | 49 lb | 18.6 lb |
| Warranty | 5 years | 2 years |
| Released | - | 2020-04 |