Sol-Ark 15K-2P Hybrid Inverter + 1 x Discover Helios Battery
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Visit CalculatorThe Sol-Ark 15K-2P Hybrid Inverter paired with the Discover Helios LiFePO4 Battery delivers a powerful, all-in-one energy solution for residential and commercial applications. Designed for maximum efficiency and reliability, the Sol-Ark 15K-2P is one of the most advanced hybrid inverters available, offering grid-tied, off-grid, and battery backup capabilities.
With its 15kW continuous power output, grid-forming technology, and smart load management features, this inverter ensures seamless operation and optimized energy use. Paired with the Discover Helios 16.1kWh battery, users gain a robust storage system built to provide high cycle life, outdoor-rated durability, and stable backup power when it’s needed most.
High Power Output - 15kW continuous power with the ability to handle off-grid, grid-tied, and hybrid applications.
Battery Backup Ready - Integrated with the Discover Helios LiFePO4 Battery for reliable long-term storage.
Flexible Energy Management - Seamlessly integrates solar, grid, and battery power with advanced load-shifting and time-of-use controls.
Smart Monitoring - Built-in monitoring system allows users to track performance and energy usage in real-time.
Outdoor-Rated Battery - The Helios battery is IP55-rated and designed for all-weather conditions.
Scalable Design - Supports future expansion for additional batteries and system growth

Everything you need is included with your product.
| Specification | Details |
| Max. Allowed PV Power (STC) | 19,500W |
| Rated MPPT Operating Voltage Range | 175 - 425V |
| MPPT Voltage Range | 150 - 500V |
| Startup Voltage | 125V |
| Max. Input Voltage | 500V |
| Max. Operating Input Current per MPPT | 26A |
| Max. Short Circuit Current per MPPT | 44A |
| No. of MPP Trackers | 3 |
| No. of PV Strings per MPPT | 2 |
| Max. AC Coupled Input | 19,200W |
| Specification | Details |
| Nominal AC Voltage | 120/240V, 120/208V, 220V |
| Grid Frequency | 50 / 60Hz |
| Real Power, max continuous | 15,000W |
| Max. Output Current | 62.5A |
| Real Power, max continuous (batteries only, no PV) | 12,000W (50A @ 240V) |
| Peak Apparent Power (10s, off-grid) | 24,000VA @ 240V |
| Peak Apparent Power (100ms, off-grid) | 30,000VA @ 240V |
| Max Output Fault Current (5s) | 94A with PV, 75A (batteries only) |
| Max Output Fault Current (100ms) | 120A |
| Max. Grid Passthrough Current | 200A |
| Power Factor Output Range | +/- 0.9 adjustable |
| Backup Transfer Time | 5ms |
| CEC Efficiency | 96.5% |
| Max Efficiency | 97.5% |
| Design (DC to AC | Transformerless DC |
| Stackable | Up to 12 in parallel |
| Specification | Details |
| Battery Technologies | Lithium / Lead Acid |
| Nominal DC Voltage | 48V |
| Operating Voltage Range | 43 - 63V |
| Capacity | 50 — 9900Ah |
| Max. Battery Charge / Discharge Current | 275A |
| Charging Controller | 3-Stage with Equalization |
| Grid to Battery Charging Efficiency | 96.0% |
| External Battery Temperature Sensor (BTS) | Included |
| Automatic Generator Start (AGS) | 2 Wire Start - Integrated |
| BMS Communication | CANBus & RS485 MODBUS |
| Specification | Details |
| Dimensions (H x W x D) | 807 x 494 x 306 mm (31.8 x 19.4 x 12 in) |
| Weight | 61.2 Kg / 135 lb. |
| Enclosure | IP65 / NEMA 3R |
| Ambient Temperature | -25~55°C, > 45°C Derating |
| Noise | < 30 dB @ 25°C (77°F) |
| Idle consumption | - No Load 90W |
| Communication and Monitoring | Wi-Fi & LAN Hardware Included |
| Standard Warranty | 10 Years |
| Specification | Details |
| Certifications and Listings | UL1741-2010/2018, IEEE1547a 2003/2014, FCC 15 Class B, UL1741SB, CA Rule 21, HECO Rule 14H |
| PV DC Disconnect Switch — NEC 240.15 | Integrated |
| Ground Fault Detection — NEC 690.5 | Integrated |
| PV Rapid Shutdown Control — NEC 690.12 | Integrated |
| PV Arc Fault Detection — NEC 690.11 | Integrated |
| PV Input Lightning Protection | Integrated |
| PV String Input Reverse Polarity Protection | Integrated |
| AC Output Breaker - 63A | Integrated |
| 250A Battery Breaker / Disconnect | Integrated |
| Surge Protection | DC Type II / AC Type II |
| Specification | Details |
| Nominal Voltage | 51.2 V |
| Energy | 16,080 Wh |
| Nominal Capacity | 314 Ah |
| Charge Bulk Voltage - Bulk Vdc | 55.2 – 56.8 V |
| Charge Absorption Voltage - U1 MAX | 55.2 – 56.8 V |
| Charge Float Voltage - U2 | 53.6 V |
| Charge Termination Current (a) | 5 A |
| Low Voltage Disconnect Recommended | 48 V |
| Low Voltage Disconnect (b) | 43.2 V |
| Max Continuous Charge Current (c) | 200 A |
| Max Continuous Discharge Current (c) | 200 A |
| Peak Discharge Current (15 seconds) | 300 A RMS |
| Self Discharge Current (operation) | ≤ 25 mA |
| Self Discharge Current (battery OFF) | ≤ 4 mA |
| Breaker Type | Single-Pole (positive only) 200 A breaker (CVP-RH-P2BD5-D200-LT) |
| Maximum Short Circuit Fault Current (IBF / ½ IBF) | 7.16 kA (100 ms) / 3.58 kA (100 ms) |
| Arc Flash Incident Energy IEm | 0.310 Cal/cm² |
| Arc Flash Incident Energy AFB | 239 mm (9.41 in) |
| Specification | Details |
| Height (A) | 900 mm (35.43 in) |
| Width (B) | 465 mm (18.31 in) |
| Depth - body only (C) | 247 mm (9.72 in) |
| Depth (including Wall-Mount bracket) | 271 mm (10.7 in) |
| Terminal | Quick Connect Plug and Pull Terminal |
| Weight | 136 kg (299.83 lb) |
| IP Rating | IP65 |
| Case Material | Galvanized Steel Sheet |
| Certifications | UN38.3, UL 1973, UL 9540A, UL 9540 DC ESS 3rd Edition (Pending) |
Can the Sol-Ark 15K-2P run off-grid without the grid?
Yes, the Sol-Ark 15K-2P is designed for off-grid operation and can form its own power grid.
How long will the Discover Helios battery last?
The battery is designed for 6,000+ cycles, giving it a lifespan of 10–15 years depending on usage.
Can I expand my battery capacity later?
Yes, the Discover Helios battery is scalable, and additional units can be added for increased storage.
Is professional installation required?
Yes, both the inverter and battery should be installed by a licensed electrician or solar installer to ensure warranty coverage and safety compliance.
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