Sol-Ark 18K Hybrid Battery Backup System
The Sol-Ark 18K 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 18K
- 18kW continuous output and 28.8kW of PV input
- 200A pass-through for whole home backup
- Grid tied, off grid or hybrid. Sells back, backs up, or runs standalone.
- 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.
Discover Helios, closed loop. Closed loop communication with the inverter, which is what most inspectors and AHJs want to see on a permitted install. Outdoor rated, 51.2V 314Ah, wall mounted. Pick this one if your build is going through plan review.
Sizing the bank
16kWh runs essentials overnight for most homes. 32kWh is the common whole home choice and where most customers land. 48kWh suits high consumption homes, extended outages and heavy motor loads.
The ladder stops at 48kWh on purpose. Past that the better move is a larger inverter rather than more storage.
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 | 1 x RUiXU conduit box |
| 32kWh | 2 x RUiXU conduit box 2 x RUiXU Busbar 3/8" (M10) RX5600 1 pair 6ft 4/0 cable, 3/8 both ends |
| 48kWh | 3 x RUiXU conduit box 2 x RUiXU Busbar 3/8" (M10) RX5600 1 pair 6ft 4/0 cable, 3/8 both ends |
Discover Helios
| Bank size | Included with the inverter and batteries |
|---|---|
| 16kWh | 1 x Helios conduit box 1 x 2/0 AWG cable set |
| 32kWh | 1 x Helios conduit box 1 x 2/0 AWG cable set 1 x Helios parallel cable |
| 48kWh | 1 x Helios conduit box 1 x 2/0 AWG cable set 2 x Helios parallel cable |
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.