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RUiXU Lithi2-16 + Sol Ark 18K-2P Hybrid Inverter Bundle RUiXU Lithi2-16 + Sol Ark 18K-2P Hybrid Inverter Bundle $9,041.95
sol-ark|SKU:SA-18K-EG4-16KW

Sol-Ark 18K-2P Hybrid Inverter + EG4 48V 314Ah 16kWh Battery Bundle

18kW Hybrid Inverter + 16kWh LiFePO4 Battery — Pre-Matched for Whole-Home Power

18,000W continuous power — Runs your whole home, not just essentials
16kWh LiFePO4 storage — 10,000 cycles at 80% depth of discharge
120/240V split-phase output — Powers well pumps, dryers, and 240V appliances
28,800W solar input capacity — Room to scale your array as needs grow
Off-grid proven architecture — Runs independent of the utility grid
  • FREE System Design Consultation -- Our engineers size your system for your actual consumption — no guesswork
  • FREE Shipping -- Ships free, including LTL freight delivery on large systems
  • Compatibility Guarantee -- Components pre-vetted to work together — we stand behind the architecture

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Sol-Ark 18K-2P Hybrid Solar Inverter + EG4 48V 314Ah 16kWh Indoor WallMount Battery Bundle
Sol-Ark 18K-2P Hybrid Solar Inverter + EG4 48V 314Ah 16kWh Indoor WallMount Battery Bundle
$9,919.95

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In the box

  • Sol-Ark 18K-2P Hybrid Solar Inverter
  • EG4 48V 314Ah 16kWh Indoor WallMount Battery
Sol-Ark 18K-2P Hybrid Solar Inverter + EG4 48V 314Ah 16kWh Indoor WallMount Battery Bundle
Sol-Ark 18K-2P Hybrid Inverter + EG4 48V 314Ah 16kWh Battery Bundle
$9,919.95

18kW Hybrid Inverter + 16kWh LiFePO4 Battery — Pre-Matched for Whole-Home Power

This bundle pairs the Sol-Ark 18K-2P hybrid inverter with the EG4 48V 314Ah 16kWh wall-mounted LiFePO4 battery for a field-tested, off-grid power system. Delivering 18,000W continuous output with 36,000W surge capability and 28,800W of usable PV input, it handles grid-tied, off-grid, and hybrid configurations without compromise. The 16kWh battery bank rated at 10,000 cycles at 80% DoD provides long-term energy storage in a space-saving indoor wall-mount design. Every component is pre-vetted for seamless compatibility — no guesswork, no mismatched parts.

FREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORT
18kW Continuous Output
10,000 Cycle Life
UL 1973 Certified
Ships Free
18,000W
Continuous Power
16 kWh
Battery Capacity
28,800W
Max Usable PV Input
No Grid Dependency, No Compromise

No Grid Dependency, No Compromise

Most solar systems sold today go dead the moment the utility fails — they are bill reducers, not backup systems. The Sol-Ark 18K-2P operates in true off-grid mode, drawing from the 16kWh LiFePO4 battery bank whether the grid is up or not. At Off Grid Vault, every bundle is pre-vetted for component compatibility — the inverter communicates with the battery BMS, voltages match, and breakers are rated correctly. You do not piece together random parts and hope. This system was designed to work together from day one, so you can trust it when the grid disappears.

Power the Heavy Loads Without Hesitation

Power the Heavy Loads Without Hesitation

Eighteen thousand watts of continuous output and a 36,000W ten-second surge mean this inverter handles well pumps, air compressors, and 240V appliances without clipping. The 120/240V split-phase configuration delivers true whole-home power, not a subset of circuits. With 28,800W of maximum usable PV input, you can build a substantial solar array that charges the 16kWh battery bank efficiently. The EG4 battery delivers 200A continuous output at 51.2V nominal — enough current to support the inverter at full load. This is grid-independent power for homes that demand real performance, not portable power station compromises.

Battery Storage That Outlasts the Competition

Battery Storage That Outlasts the Competition

The EG4 48V 314Ah wall-mounted battery uses LiFePO4 chemistry — not lithium-ion — rated for 10,000 cycles at 80% depth of discharge. That translates to over a decade of daily charge cycles while retaining 80% capacity. UL 1973 certified for safety, the battery mounts cleanly indoors at 36.4 × 18.1 × 9.6 inches. At 293.2 lbs, this is substantial, permanent storage — not something you move between sites. The 48V nominal DC architecture matches the Sol-Ark 18K-2P directly, supporting battery capacities from 50Ah to 9,900Ah so you can expand your bank as your energy needs grow. This is field-tested storage built for long-term off-grid duty.

Compatibility Check

This bundle is designed for specific electrical and physical setups. Confirm your system meets these requirements before ordering.

  • Home with 120/240V split-phase electrical panel
  • Wall space of at least 36.5 in wide × 18.2 in deep × 9.7 in available
  • Daily energy consumption between 10–25 kWh

Built For

This inverter and battery bundle is field-tested for the scenarios where reliability is non-negotiable.

Whole-Home Backup
Off-Grid Homestead
Light Commercial
Grid-Tied with Battery Backup

Full specifications

At a glance

Dimensions
36.4 × 18.1 × 9.6 in
Power
18,000W
Compliance
UL 1973
Full specifications13 data points across 4 categories

Dimensions

Dimensions36.4 × 18.1 × 9.6 in
Weight293.2 lbs

Power & Performance

Continuous Power18,000W
Surge Power (10s)36,000W
Nominal AC Voltage120/240; 208 0.88Un＜U＜1.1Un
Output Current (Cont.)75A
Max. Usable PV Power28,800W
Nominal Voltage51.2 V
Capacity314 Ah
Maximum Continuous Output200 A
Cycle Life10,000 cycles @ 80% DoD

Materials

ConstructionSee product page

Compliance & Warranty

Current CertificationUL 1973

The Off Grid Vault Promise

Every system package we sell is backed by real accountability — not just a receipt.

Compatibility GuaranteeThis inverter and battery are pre-vetted to communicate and operate together. We stand behind the system architecture.
30-Day Performance GuaranteeUninstalled, in original packaging — if it doesn't perform as specified, we make it right.
Free System Design ConsultationOur engineers size your system for your actual consumption. No guesswork, no incompatible components.
★★★★★
“Running my 1,400 sq ft homestead fully off-grid now. The Sol-Ark handled the well pump startup without a hiccup — no dimming lights, no tripping. EG4 battery holds strong overnight even with the fridge and chest freezer pulling. Wish I had done this five years ago instead of throwing money at the power company.”
F
First L.Prescott, AZ

18K-2P Hybrid Inverter + EG4 48V 314Ah 16kWh Indoor WallMount Battery Bundle

This bundle combines the Sol-Ark 18K-2P Hybrid Inverter with the EG4 48V 314Ah 16kWh Indoor WallMount Battery to deliver a powerful, scalable energy solution for residential and light commercial systems. The Sol-Ark 18K-2P provides robust split-phase output and supports grid-tied, off-grid, and hybrid configurations, making it ideal for whole-home backup and high-demand solar installations. Paired with the EG4 16kWh wall-mounted lithium battery, the system offers substantial, efficient energy storage in a clean, space-saving indoor design. Together, this bundle delivers seamless compatibility, strong backup performance, and the flexibility to expand as energy needs grow, helping reduce grid reliance while ensuring reliable power day after day.


EG4 48V 314Ah 16kWh Indoor Wall Battery Specs

  • Nominal Voltage: 51.2 V
  • Capacity: 314 Ah
  • Maximum Continuous Output: 200 A
  • Cycle Life: 10,000 cycles @ 80% DoD
  • Dimensions: 36.4 × 18.1 × 9.6 in
  • Weight: 293.2 lbs
  • Current Certification: UL 1973

Sol-Ark 18K-2P Hybrid Inverter Specs

  • Continuous Power: 18,000W
  • Surge Power (10s): 36,000W
  • Nominal AC Voltage: 120/240; 208 0.88Un＜U＜1.1Un
  • Output Current (Cont.): 75A
  • Max. Usable PV Power: 28,800W
  • Nominal DC Voltage: 48V
  • Capacity: 50 — 9900Ah
  • Dimensions (H x W x D): 33.98 in × 18.27 in × 11.10 in
  • Weight: 137 lb


Your Satisfaction with EG4 & Sol-Ark is Guaranteed:

  • Lowest Price Guarantee

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Frequently Asked Questions

If your utility runs $250–$400 per month, this system pays for itself in roughly 2 to 3.3 years through eliminated or reduced bills. After that, every dollar you would have sent to the utility stays with you. The EG4 LiFePO4 battery is rated for 10,000 cycles — at one cycle per day, that is over 27 years of usable life. You are not spending $9,920. You are redirecting utility payments into an asset that outlasts the payback period by decades.
When you buy individual components from different vendors, you assume all compatibility risk. The inverter might not communicate with the battery BMS. The voltage might not match. At Off Grid Vault, this bundle is pre-vetted — the Sol-Ark 18K-2P and EG4 48V battery are confirmed compatible at the 48V nominal DC level. We are an authorized dealer for both brands, so warranty claims go through us directly. You get a compatibility guarantee, free system design consultation, and a single point of accountability if anything needs support.
With 18,000W continuous output and 36,000W surge capability, this bundle handles simultaneous motor-start loads like well pumps alongside resistive loads like lighting and refrigeration. The 120/240V split-phase output supports both 120V circuits and 240V appliances directly. Actual runtime depends on your daily kWh consumption, but the 16kWh battery at 80% DoD gives you roughly 12.8kWh of usable capacity. For a precise sizing based on your actual loads, our free system design consultation will map your consumption to the exact configuration you need.
The EG4 48V 314Ah battery is rated for 10,000 charge cycles at 80% depth of discharge using LiFePO4 chemistry. At one full cycle per day, that exceeds 27 years before reaching 80% of original capacity. LiFePO4 also handles heat and cold better than standard lithium-ion, with no thermal runaway risk. The battery carries UL 1973 certification, which is the standard for energy storage system safety. This is not a seasonal or portable power unit — it is permanent, stationary storage engineered for daily deep cycling in residential and light commercial applications.
The Sol-Ark 18K-2P supports battery capacities from 50Ah to 9,900Ah at 48V nominal, so you can start with this single 314Ah EG4 battery and add more as your consumption grows. The 28,800W maximum PV input also means you can expand your solar array over time without swapping the inverter. This bundle is the foundation — not a dead-end. Many of our customers start with one battery bank and add a second within a year as they transition more loads off the grid.
This bundle includes the Sol-Ark 18K-2P inverter and the EG4 48V 314Ah 16kWh wall-mount battery. You will still need solar panels, mounting hardware, DC wiring, breakers, and an enclosure — which vary based on your site and array size. Rather than guess, we recommend using our free system design consultation before purchasing. Tell us your daily kWh consumption and site details, and we will specify the exact additional components needed for a complete, functioning system. No hidden add-ons — just honest guidance.
SKU: SA-18K-EG4-16KW Category: Brand:

The Off Grid Vault Promise

Every system package we sell is backed by real accountability — not just a receipt.

Compatibility Guarantee This inverter and battery are pre-vetted to communicate and operate together. We stand behind the system architecture.
30-Day Performance Guarantee Uninstalled, in original packaging — if it doesn't perform as specified, we make it right.
Free System Design Consultation Our engineers size your system for your actual consumption. No guesswork, no incompatible components.

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About sol-ark Inverter Bundle

sol-ark is a trusted manufacturer of premium inverter bundle. OffGridVault is an authorized dealer offering the full sol-ark lineup with free delivery, price match guarantee, and expert support.

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