Victron MultiPlus-II 12/4k 2x120V
The biggest 12 V MultiPlus-II, for 50 A motorhomes with large lithium banks that want air conditioning off-grid. Confirm the listing your installer needs, since no UL certificate is published.
DRSA $1,190$1,190
The Victron MultiPlus-II 12/4k 2x120V is the better 12V inverter overall, rated 4.0 to 3.0. The Victron MultiPlus-II 12/4k 2x120V leads on warranty, idle draw and efficiency. The SunGoldPower 4000W LF Split-Phase 12V wins on value. The SunGoldPower 4000W LF Split-Phase 12V costs $150 less ($1,040 vs $1,190).
SunGoldPower 4000W LF Split-Phase 12V
#40 in Inverter-chargersFull review
For off-grid homes that need 240 V appliances but run a 12 V battery bank. Most buyers at this size would do better with a 24 V or 48 V system.
Amazon $1,090 SunGoldPower $1,040$1,040
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 2x120V for warranty (5-year warranty vs 1-year warranty), idle draw (1.5 A idle (about 18 W) with nothing plugged in vs 3.8 A idle (about 45 W) with nothing plugged in) and efficiency (93% peak efficiency (maker rating) vs 88% peak efficiency (maker rating)).
- Choose the SunGoldPower 4000W LF Split-Phase 12V for value ($0.26 per continuous watt vs $0.35 per continuous watt).
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 2x120V | SunGoldPower 4000W LF Split-Phase 12V |
|---|---|---|
| Overall rating | 4.0/5 | 3.0/5 |
| Value 30% | 87 $0.35 per continuous watt | 99 $0.26 per continuous watt |
| Idle draw 15% | 73 1.5 A idle (about 18 W) with nothing plugged in | 0 3.8 A idle (about 45 W) with nothing plugged in |
| Safety listing 15% | 0 no UL 458 or UL 1741 listing stated | 0 no UL 458 or UL 1741 listing stated |
| Warranty 15% | 100 5-year warranty | 0 1-year warranty |
| Features 15% | 65 optional remote, app add-on, lithium charge profile, hardwire terminal | 65 remote included, lithium charge profile, hardwire terminal; no app |
| Efficiency 10% | 89 93% peak efficiency (maker rating) | 33 88% peak efficiency (maker rating) |
Specifications
| Victron MultiPlus-II 12/4k 2x120V | SunGoldPower 4000W LF Split-Phase 12V | |
|---|---|---|
| Output | ||
| Type | Pure sine wave inverter-charger | Pure sine wave inverter-charger |
| Continuous power | 3,400 W | 4,000 W |
| Surge power | 6,000 W for 2 s | 12,000 W for 20 s |
| DC input range | 9.5 to 17 V | 10 to 16 V |
| Idle draw | 1.5 A (18 W) | 3.8 A (45 W) |
| Power-saving draw | 0.3 A | 1.5 A |
| Peak efficiency | 93% | 88% |
| Connections | ||
| AC outlets | 0 | - |
| GFCI outlets | No | Yes |
| Hardwire terminal | Yes | Yes |
| USB ports | None | - |
| Transfer switch | Yes | Yes |
| Charger | 160 A | 120 A |
| Lithium charge profile | Yes | Yes |
| Parallel units | Yes | No |
| Control and build | ||
| Remote | Optional extra | Included |
| App | Optional add-on | No |
| Display | No | No |
| Safety listing | No | No |
| Cooling | fan | load-controlled fan |
| Dimensions | 650 x 275 x 165 mm (25.6 x 11 x 6.5 in) | 17.4 x 9.5 x 7.8 in |
| Weight | 55 lb | 53 lb |
| Warranty | 5 years | 1 year |