Checked as a single pack, which covers this inverter’s charge current on its own.
Full specifications: Victron MultiPlus-II 48/3000 and EG4 WallMount Indoor 48V 280Ah.
The four checks
Voltage window: Overlapping window 44.8 to 58.4 V
The inverter operates from 38 to 66 volts and the battery cuts off outside 44.8 to 58.4 volts. Both stay inside 44.8 to 58.4 volts, which covers a normal LiFePO4 charge and discharge cycle with margin at both ends.
Charge current: 35 A into a 150 A limit
The inverter tops out at 35 amps and the battery accepts 150 amps, so a default install cannot overrun the pack. Adding batteries in parallel raises the accepted current further.
Surge rating: Battery surge figure unpublished
A surge to 5500 watts draws roughly 115 amps at 48 volts. This battery publishes a 150 amp continuous rating and no separate surge figure, and continuous is the wrong number to check a motor start against. Confirm the peak rating and its duration with the manufacturer before running motor loads.
Closed-loop communication: Both speak CAN, no document names the pair
The inverter and the battery both support CAN. Neither manufacturer publishes a document naming the other unit, and a shared bus standard is not a shared message format. It may well work on the bench. Confirm the protocol setting with both manufacturers before relying on BMS control.
What this means when you install it
Set the inverter charge current to 35 amps or less. That is the inverter maximum, which this bank can absorb. Protect the battery run with a 100 amp Class T fuse and 2 AWG cable.
The inverter and the battery both support CAN. Neither manufacturer publishes a document naming the other unit, and a shared bus standard is not a shared message format. It may well work on the bench. Confirm the protocol setting with both manufacturers before relying on BMS control.
Figures side by side
| Field | Victron MultiPlus-II 48/3000 | EG4 WallMount Indoor 48V 280Ah |
|---|---|---|
| Voltage window | 38 to 66 V | 44.8 to 58.4 V |
| Charge current | 35 A delivered | 150 A accepted |
| Peak draw | 5,500 W surge | surge unpublished |
| Usable capacity | n/a | 14.34 kWh |
| Comms | VE.Bus, CAN | CAN, RS485 |
Manufacturer documents
Manufacturer documents: Victron manuals and datasheets. Figures here should be read against the revision that covers your serial number, because manufacturers revise specifications without changing the model name.
Manufacturer documents: EG4 product and document library. Figures here should be read against the revision that covers your serial number, because manufacturers revise specifications without changing the model name.
Both units, current pricing
Prices on these move week to week, and the battery is usually the line item worth watching.
Victron MultiPlus-II 48/3000 on AmazonEG4 WallMount Indoor 48V 280Ah on AmazonComms cableAffiliate links. As an Amazon Associate this site earns from qualifying purchases, at no extra cost to you. Prices and stock change often, and a listing appearing here is not a statement that the pairing above is approved.
Other pairings for the EG4 WallMount Indoor 48V 280Ah
EG4 18KPV with EG4 WallMount Indoor 48V 280Ah
Partial match, some fields unverified.
EG4 6000XP with EG4 WallMount Indoor 48V 280Ah
Partial match, some fields unverified.
EG4 FlexBoss21 with EG4 WallMount Indoor 48V 280Ah
Partial match, some fields unverified.
Sol-Ark 12K with EG4 WallMount Indoor 48V 280Ah
Partial match, some fields unverified.
Questions people actually ask
Will the Victron MultiPlus-II 48/3000 work with the EG4 WallMount Indoor 48V 280Ah?
Partial match, some fields unverified. Checked as a single pack, which covers this inverter’s charge current on its own. The four checks below show which field produced that result.
What does this pairing cost to wire up?
Beyond the two units, a 100 amp Class T fuse and holder, 2 AWG battery cable cut to matched lengths, and a busbar if you are running 1 packs. A comms cable if you intend to attempt closed loop, and the pinout is rarely the same between brands.
Where does this pairing go wrong in practice?
The inverter and the battery both support CAN. Neither manufacturer publishes a document naming the other unit, and a shared bus standard is not a shared message format. It may well work on the bench. Confirm the protocol setting with both manufacturers before relying on BMS control.
What charge current should I set?
The inverter tops out at 35 amps and the battery accepts 150 amps, so a default install cannot overrun the pack. Adding batteries in parallel raises the accepted current further.