EG4 12000XP Off-Grid Battery Backup System
The EG4 12000XP paired with your choice of outdoor rated wall mount lithium battery, sized from 16kWh to 48kWh. One matched set, with the conduit boxes, cabling, busbars and lugs your specific configuration needs, so it arrives ready to wire. Free shipping, no residential or liftgate fees.
Why the 12000XP
- 12kW continuous output and 24kW of PV input
- 120/240V split phase
- Off grid. Designed to run independent of the utility.
- 10 year warranty, UL listed
Choosing your battery
RUiXU Lithi2-16, open loop. Outdoor rated IP65, wall mounted, UL1973 and UL9540 certified, 9500 cycles and a 10 year warranty. Lower cost per kWh and our best selling storage battery by a wide margin. Ships with its own inverter connection cables. The right choice for off grid and unpermitted builds.
EG4 WallMount Indoor, closed loop. The battery BMS talks to the inverter directly, so it reads true state of charge instead of estimating from voltage, applies correct charge limits, and handles faults cleanly. Self heating, UL9540A. Worth the difference if you want accurate reporting or a single brand to call for support.
Sizing the bank
EG4 specifies a 400Ah minimum to support the 12000XP at full rated output. Each wall mount here is 314Ah, so the 16kWh configuration runs below that minimum. It is a common and widely sold pairing and it works, but the inverter will not deliver its full 12kW from battery alone. If you need the full rating, start at 32kWh.
32kWh is where most customers land. 48kWh suits high consumption homes and extended outages. Past 48kWh step up to a larger inverter.
What ships
- The inverter
- Your selected batteries, matched and pre configured
- Free shipping, no residential or liftgate fees
Plus the conduit boxes, cabling, busbars and lugs your exact configuration needs, so it arrives ready to wire:
RUiXU Lithi2-16
| Bank size | Included with the inverter and batteries |
|---|---|
| 16kWh | No additional parts needed |
| 32kWh | 1 x EG4 busbar 1 pair 6ft 4/0 cable, 5/16 both ends |
| 48kWh | 1 x EG4 busbar 1 pair 6ft 4/0 cable, 5/16 both ends |
EG4 WallMount Indoor
| Bank size | Included with the inverter and batteries |
|---|---|
| 16kWh | 1 x EG4 Indoor Buildable Conduit Box 2 x cable lugs 2/0 AWG 5/16 |
| 32kWh | 2 x EG4 Indoor Buildable Conduit Box 1 x EG4 PowerPro battery paralleling cables 4 x cable lugs 2/0 AWG 5/16 |
| 48kWh | 3 x EG4 Indoor Buildable Conduit Box 2 x EG4 PowerPro battery paralleling cables 4 x cable lugs 2/0 AWG 5/16 |
RUiXU batteries include their own inverter connection cables, which is why the smaller RUiXU configurations need fewer parts.
What is not included
Solar panels, racking, conduit, AC wiring and installation labor. This is the storage half of the system. If you need panels too, ask us and we will quote the full build.
Not sure which size
Call us and we will size it against your actual loads before you order. There is no charge for it, and we would rather you buy the right system once.