Victron MultiPlus-II 48/3000 120V
A well-rounded 48 V inverter-charger for an off-grid cabin, backup system or large RV. Low idle draw, real certifications and Victron’s system integration make it a safe choice.
Amazon DRSA $1,052.30$1,052.30
3.8/5
For a 48 V RV, cabin or backup system that needs a rugged, listed 120 V inverter-charger with big surge.
- 4,000 WContinuous
- 8,500 WSurge
- 120 VOutput
- 25 WIdle draw
- YesUL listed
- 3 yearsWarranty
Check price at ResSupply$2,026Check price at A1 Solar Store$2,531.49
Price checked October 24, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Listed to UL 458, with a UL 1741 certificate, for RV and home inspections
- Holds 8,500 W for 5 seconds, enough to start a well pump or air conditioner
- 60 A charger with an LFP preset recharges a 48 V lithium bank from shore power or a generator
- Under 8 W in search mode
Cons
- 120 V only, with no 240 V output
- 55 lb and hardwire only
- Remote and monitoring kit cost extra
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Specifications
| Model number | MS4048-L |
|---|---|
| Output | |
| Type | Pure sine wave inverter-charger |
| AC output | 120 V |
| Continuous power | 4,000 W |
| Surge power | 8,500 W for 5 s |
| DC input range | 36 to 67.6 V |
| Idle draw | 25 W (0.5 A at 48 V) |
| Power-saving draw | 8 W |
| Peak efficiency | 94% |
| Connections | |
| AC outlets | 0 |
| GFCI outlets | No |
| Hardwire terminal | Yes |
| USB ports | None |
| Transfer switch | Yes |
| Pass-through rating | 30 A |
| Charger | 60 A |
| Lithium charge profile | Yes |
| Parallel units | No |
| Control and build | |
| Remote | Optional extra |
| App | Optional add-on |
| Display | No |
| Safety listing | ETL listed to UL/cUL 458 and CSA C22.2 No. 107.1-01; UL 1741 certificate (ATM) |
| Design | Low-frequency (transformer) |
| Cooling | fan |
| Dimensions | 13.75 x 12.65 x 8 in (349 x 321 x 203 mm) |
| Weight | 55 lb |
| Warranty | 3 years |
Alternatives in this size
OutBack VFXR3648A
For a cabin or off-grid home built around 120 V loads, with room to stack a second unit later. Rugged and code-friendly, but it idles high for its size.
Amazon $2,139$2,139
Victron MultiPlus 48/2000 120V
A compact inverter-charger for a small 48 V cabin or boat with a generator or shore feed. Pick a MultiPlus-II 48/3000 for more power and a UL listing.
Northern Arizona Wind & Sun $785.42$785.42
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