Victron MultiPlus-II 12/4k 2x120V

Last updated: October 24, 2026

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.

  • 3,400 WContinuous
  • 6,000 WSurge
  • 1.5 AIdle draw
  • NoUL listed
  • 5 yearsWarranty
Check price at DRSA$1,190

Price checked October 24, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros
  • Accepts a full 50 A 120/240 V RV service
  • 3,400 W continuous runs a roof air conditioner from a 12 V bank
  • 160 A charger refills a 400 Ah lithium bank in under three hours
  • Five-year warranty
Cons
  • Inverts to 120 V only; 240 V loads need shore or generator power
  • No UL certificate published for this size yet
  • Draws 1.5 A idle with search mode off

The Victron MultiPlus-II 12V 120V family

Every Victron MultiPlus-II 12V 120V model we rank, smallest first. Ratings compare each against its own size.

ModelContinuousRatingPrice
Victron MultiPlus-II 12/3000 120V2,400 W4.5/5$1,006.40
Victron MultiPlus-II 12/3000 2x120V2,400 W4.4/5$1,088
Victron MultiPlus-II 12/4k 120V3,400 W4.0/5$1,105
Victron MultiPlus-II 12/4k 2x120V (this one)3,400 W4.0/5$1,190

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 numberPMP122405200
Output
TypePure sine wave inverter-charger
Continuous power3,400 W
Surge power6,000 W for 2 s
DC input range9.5 to 17 V
Idle draw1.5 A (18 W)
Power-saving draw0.3 A
Peak efficiency93%
Connections
AC outlets0
GFCI outletsNo
Hardwire terminalYes
USB portsNone
Transfer switchYes
Charger160 A
Lithium charge profileYes
Parallel unitsYes
Control and build
RemoteOptional extra
AppOptional add-on
DisplayNo
Safety listingNo
Coolingfan
Dimensions650 x 275 x 165 mm (25.6 x 11 x 6.5 in)
Weight55 lb
Warranty5 years

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