EG4 6000XP

The 6000XP is the unit most people land on for a first 48V off-grid build, and its limitation catches them later: it will not export to the grid or run as a grid-tied hybrid. It charges from AC or PV and runs loads from the battery, nothing more. The 40 to 60 volt window is wide enough for any 48V LiFePO4 pack on the market, so voltage is almost never the thing that breaks a pairing here. Comms is.

Published figures

Continuous output

6,000 W

Surge output

12,000 W

Battery voltage window

40 to 60 V

Max charge current

120 A

Battery comms

CAN, RS485

Output

120/240 V split phase

Grid interactive

No, off grid only

PV input

8,000 W, 500 Voc max

What this inverter will and will not do

• It will not export to the grid or run as a grid interactive hybrid. It charges from PV or AC and runs loads from the battery. If your plan involves net metering, this is the wrong unit.
• Output is 120/240 V split phase from one box, so standard household 240 V loads run directly.
• Battery communication runs over CAN, RS485, and closed loop still depends on both sides agreeing on a message format rather than only on a bus standard.

Sizing a battery bank for it

This inverter delivers up to 120 amps of charge current, and that figure, not your daily energy use, sets the minimum pack count. Every battery below is shown at the smallest bank that can absorb the full charge rate.

Fuse and cable for the battery run

Running flat out this inverter pulls about 125 amps at 48 volts, and a surge takes it to roughly 250 amps. Size the protection for the peak, not the average: a 175 amp Class T fuse at the battery positive terminal and 2/0 AWG cable on the battery run. Class T rather than a standard fuse because a 48 volt lithium bank can deliver enough short circuit current to arc across a fuse that lacks the interrupt rating. Confirm the sizing against your installation manual, which accounts for run length and ambient temperature.

Communication

Manufacturer documentation names EG4 LifePower4 48V 100Ah, EG4 LL-S 48V 100Ah, EG4 PowerPro WallMount 48V 280Ah, EG4 WallMount Indoor 48V 280Ah for closed-loop operation. Any battery not on that list runs open loop until a document says otherwise.

Where the figures come from

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.

Questions people actually ask

Worth reading before you install

• How many batteries this inverter actually needs
• Split phase or single phase, and what it costs to get wrong
• Off grid or hybrid, and what each one will not do
• Cable sizing for the battery run