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 3.0. The Victron MultiPlus-II 12/4k 120V 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 $65 less ($1,040 vs $1,105).
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 120V 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 $0.33 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 120V | SunGoldPower 4000W LF Split-Phase 12V |
|---|---|---|
| Overall rating | 4.0/5 | 3.0/5 |
| Value 30% | 90 $0.33 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 120V | 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 | 631 x 277 x 164 mm (24.8 x 10.9 x 6.5 in) | 17.4 x 9.5 x 7.8 in |
| Weight | 49 lb | 53 lb |
| Warranty | 5 years | 1 year |