This is a 48V hybrid solar inverter/charger built for split-phase 120/240VAC homes, with battery backup, AC/DC solar coupling, and grid interconnection in one outdoor-rated cabinet. If you need whole-home backup that also plays well with your utility's grid-tie rules, this is the category to look at.
This is a hybrid inverter/charger architecture (grid-tie with battery backup) - not an off-grid-only unit, and not a chargeverter. It supports both DC-coupled and AC-coupled solar, integrated battery charging, and grid passthrough, based on the Sol-Ark 12K-2P-LL datasheet. UL/IEEE listings cited below apply to the standalone inverter/PCS platform, not to any system-level ESS certification. Note: If you would like to review the manufacturer Product Specifications, Warranty, Brochure, etc., for this system, please refer to the "Resources (System Manuals and Warranty)" Tab above on this page.
Critical Power & Interconnection Requirements
- AC output: 120/240V or 120/208V split-phase, 50/60 Hz
- Battery DC input: 48V nominal (operating range 43-59V)
- Continuous AC output: 9,000 W (loads/grid sell) - separate from surge/peak figures below
- Peak surge power (10 second rating): 20,800 W
- Max. continuous PV/backup combined rating on the platform: 12,000 W total (9,000W AC continuous + 3,000W DC to batteries, per manufacturer footnote)
- PV MPPT rated operating voltage window: 150 - 425 V, with a max input voltage listed at 500 V
- 3 MPPT inputs, 32A per-MPPT rated current, 60A per-MPPT max input short circuit current
- Backup transfer time: 5 ms (5,000 microseconds), per datasheet
- Does NOT operate on 12V or 24V battery banks - 48V nominal only
- Does NOT function as an off-grid-only inverter - this platform is grid-interactive with NEM/grid-sell capability where permitted by the utility
- Does NOT include a system-level UL 9540 ESS certification claim for this standalone inverter - UL 9540, where referenced by the manufacturer, applies to certified battery+inverter system combinations, not this unit alone
Neutral-ground bonding is the single most common failed-inspection item on split-phase hybrid inverters like this one. In a stand-alone backup or off-grid configuration, the inverter typically needs to establish its own neutral-ground bond at the first disconnect; in a grid-tied configuration feeding a home already bonded at the main panel, a second bond creates a parallel neutral path and nuisance ground-fault trips. Before energizing, verify bonding status with a Digital Multimeter (checking for continuity/voltage between neutral and ground bus) and confirm against the Sol-Ark installation guide for your specific service configuration. This prevents ground-fault fault codes and failed utility inspections. Document your bonding point per NEC Article 690 (PV systems) and NEC Article 705 (interconnected electric power production sources) before requesting final utility sign-off.
Key Benefits
- 5 ms backup transfer time keeps sensitive electronics running through grid outages
- 3 independent MPPT inputs support flexible string design across roof planes or orientations
- 100A max passthrough current (grid to load) rating supports higher continuous home loads
- Integrated PV DC disconnect, ground fault detection, rapid shutdown, and arc fault detection reduce external BOS parts
- Both AC and DC solar coupling supported - useful for retrofits with existing grid-tie string inverters
- Outdoor-rated enclosure per manufacturer datasheet
Technical Table
| Spec | Value | Unit |
|---|---|---|
| Continuous AC Output (loads/grid sell) | 9,000 | W |
| Peak Surge Power (10s) | 20,800 | W |
| Nominal Real Power (240V), Grid to Battery Charge | 10,000 / 8,660 | W |
| DC Battery Voltage (Nominal) | 48 | V |
| Battery Operating Voltage Range | 43 - 59 | V |
| AC Output Voltage (Backup/Off-Grid) | 120/240, 120/208 | V |
| Rated Frequency | 50 / 60 | Hz |
| Max. STC Rated PV Power | 12,000 | W |
| Max. Usable Combined MPPT PV Power | 500 | V |
| MPPT Rated Operating Voltage Range | 150 - 425 | V |
| Number of MPPT Inputs | 3 | - |
| Per-MPPT Terminal Current Rating | 32 | A |
| Per-MPPT Max Charge/Discharge Current | 60 | A |
| Max. Passthrough Current (Grid to Load) | 100 | A |
| Backup Transfer Time | 5 | ms |
| Max. AC Coupled PV Power (240V) | 24,000 / 20,800 | W |
| Weight | 653 x 421.4 x 249.5 | mm (Dimensions H x W x D) |
| Operating Temperature Range | -40 to 60 | C |
| Idle / No-Load Consumption | 60 | W |
| Standard Warranty | 10 | Years |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
Compatibility & Fitment
- Compatible battery technology per manufacturer data: Lead-acid or Lithium, closed-loop via BMS RJ45 ports (RS485/CAN), 48V nominal only
- Includes dedicated Parallel RJ45 ports for multi-unit stacking configurations - [NEEDS VERIFICATION] for maximum parallel unit count, not stated in provided data
- Supports both DC-coupled and AC-coupled solar arrays on the same platform
- Includes GEN port for generator support / auto-generator-start functionality
- NOT compatible with 12V or 24V battery banks
- NOT an off-grid-only unit - this is a grid-interactive hybrid inverter; it is designed to interconnect with utility service where NEM/grid-sell is permitted
- Wi-Fi/Bluetooth/Ethernet dongle hardware is listed as included per manufacturer data - confirm packaged accessory list against the Resources tab before ordering
Compliance & Environment Table
| Category | Listing / Code |
|---|---|
| Utility Interconnection Listings | UL 1741 SB, UL 1741 SA, UL 1741 CRD-PCS, IEEE 1547.1-2020 |
| Additional Safety Listings | UL 1699B, UL 1998, FCC Part 15 Class B, CSA C22.2 107.1-16 |
| State/Regional Program Listings | CSIP, CA Rule 21, HECO Rule 14H (SRD 2.0) |
| NEC Code Applications (Integrated Protection) | PV DC Disconnect (NEC 240.15), Ground Fault Detection (NEC 690.5), PV Rapid Shutdown (NEC 690.12), PV Arc Fault Detection (NEC 690.11) |
| Surge Protection | DC Type II / AC Type II, integrated |
| Operating Altitude Derating | Derating begins above 2000 m (6561 ft) |
FAQ
Can this inverter sell power back to the grid?
Yes. The manufacturer data lists NEM grid sell capability as part of the hybrid platform's grid interaction features.
What battery voltage is required?
This unit is designed for a 48V nominal DC battery bank (operating range 43-59V per the datasheet). It is not built for 12V or 24V battery banks.
Can I parallel multiple units together?
The unit includes dedicated parallel RJ45 ports on the chassis, indicating parallel-stacking capability. [NEEDS VERIFICATION] for the maximum number of units supported in parallel - this figure was not present in the provided data.
Is this UL 1741 listed for utility interconnection?
Yes. The datasheet lists UL 1741 SB, UL 1741 SA, and UL 1741 CRD-PCS listings, along with IEEE 1547.1-2020 compliance.
Warranty & Registration
Manufacturer datasheet lists a standard warranty term of 10 years for this model. Register your unit through the manufacturer's product registration process referenced in their Resources library. For full warranty terms, exclusions, and closed-loop battery communication requirements affecting warranty coverage, refer to the "Resources (System Manuals and Warranty)" Tab above on this page. We always reply back if you have questions before you order - ask us first if you are unsure about your battery bank voltage or parallel configuration.
