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Sol-Ark 18K + 2 Pytes V16 32kWh Home Battery Backup Kit

Sol-Ark 18K + 2 Pytes V16 32kWh Home Battery Backup Kit

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Sol-Ark 18K + 2 Pytes V16 32kWh Home Battery Backup Kit

Sol-Ark 18K + 2 Pytes V16 32kWh Home Battery Backup Kit

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MPN No: Sol-Ark 18K-2P
Regular price $15,280.00 -16% $12,799

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Data Sheet: Sol Ark 18kW
Pytes Energy 16kWh Battery Data Sheet
Pytes Bundle Sheet
User Manual

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Regular price $15,280.00 -16% $12,799

Sol-Ark 18K + 2 Pytes V16 32kWh Home Battery Backup Kit

More Battery Capacity and Output for Demanding Home Backup Systems

Build a powerful home energy system with the Sol-Ark 18K-2P-N hybrid inverter and two Pytes V16 16kWh LiFePO4 batteries. This kit provides 32kWh of nominal battery storage, higher battery-bank output, generator integration and closed-loop battery communication in one expandable energy-storage solution.

The Sol-Ark 18K can manage power from solar panels, the utility grid, a generator and battery storage. Two Pytes V16 batteries provide more stored energy and greater battery-only output than the single-battery configuration, making this kit better suited for homes with larger loads or longer backup requirements.

What’s Included

  • (1) Sol-Ark 18K-2P-N Hybrid Inverter
  • (2) Pytes V16 16kWh LiFePO4 Batteries

Included With Each Pytes V16 Battery

  • (1) Cover Plate
  • (1) Conduit Entry Plate
  • (1) Wall-Mounted Bracket
  • (1 Set) V16 Power Cables
  • (2) Spare RJ45 Connectors
  • (1) Cascading Communication Cable
  • (8) Expansion Screws
  • (4) Hexagon Cross-Slot Screws
  • (1) Earthing Cable

Please note: Each battery includes a wall-mounting bracket and the battery power and communication accessories listed above. Solar panels, racking, optional Pytes ground-mounting brackets, AC and PV wiring, conduit, busbars or combiners, overcurrent protection, disconnects and other site-specific installation materials are sold separately unless specifically stated.

Two-Battery Output Advantage

Two Pytes V16 batteries provide approximately 15.36kW of recommended continuous battery-bank discharge output and up to 20.48kW of combined maximum continuous battery output at nominal voltage before inverter, wiring, system-setting and operating-condition limits. The Sol-Ark 18K is rated for up to 18kW of continuous AC output. This two-battery configuration therefore provides substantially more battery-only power than the single-battery kit and is better suited for supporting multiple high-demand loads during an outage.

Why Choose the Sol-Ark 18K With Two Pytes V16 Batteries?

  • 32kWh nominal battery capacity: Twice the stored energy of the single-V16 configuration for longer backup and greater solar self-consumption.
  • Higher battery-bank output: Two batteries can share the load and better support the Sol-Ark 18K during grid outages.
  • Up to 18kW continuous inverter output: Supports demanding residential and light-commercial electrical systems, subject to battery, system and operating conditions.
  • Closed-loop battery communication: The Sol-Ark and Pytes systems can exchange operating information through compatible CAN or RS485 communication.
  • Outdoor-ready equipment: The Sol-Ark inverter is IP65/NEMA 3R rated, while each Pytes V16 battery carries an IP66 enclosure rating.
  • Generator integration: The Sol-Ark 18K includes a dedicated generator connection with generator-start capabilities.
  • Expandable storage: The Pytes V16 platform supports up to 16 batteries, subject to proper system design and applicable electrical codes.
  • Low-temperature operation: Integrated battery heating helps support charging in colder environments.
  • Long-life LFP chemistry: Lithium iron phosphate chemistry provides strong thermal stability and long cycle life.

Designed for Energy Independence and Grid Resilience

This kit can be configured for several different operating goals, including:

  • Whole-home or partial-home battery backup during utility outages
  • Solar self-consumption and nighttime solar-energy use
  • Time-of-use electricity-rate management
  • Generator-supported backup systems
  • Grid-connected or appropriately designed off-grid installations
  • Future battery-capacity expansion

A 32kWh battery bank can support essential household loads for substantially longer than a single 16kWh battery or operate larger loads for shorter periods. Actual backup duration depends on connected loads, battery state of charge, system settings, temperature, inverter losses and the reserve capacity selected during commissioning.

Product Specifications

Kit Configuration Sol-Ark 18K-2P-N inverter + two Pytes V16 batteries
Battery Quantity 2
Battery Chemistry Lithium iron phosphate, LiFePO4/LFP
Combined Nominal Battery Capacity 32kWh
Battery-Bank Voltage 51.2V nominal, batteries connected in parallel
Combined Battery Capacity 628Ah
Recommended Battery-Bank Charge Current 250A combined, approximately 12.8kW at nominal voltage
Recommended Battery-Bank Discharge Current 300A combined, approximately 15.36kW at nominal voltage
Maximum Combined Battery Charge/Discharge Current 400A combined, approximately 20.48kW at nominal voltage, before inverter and system limits
Combined Peak Battery Discharge 600A combined, approximately 30.72kW at nominal voltage for up to 15 seconds, before inverter and system limits
Inverter Continuous Output Up to 18,000W
Inverter Surge Output Up to 36,000W for 10 seconds, subject to available energy sources and operating conditions
Inverter Battery Charger Up to 350A
Maximum Supported PV Array 32,400W DC
Maximum Usable PV Power 28,800W DC
Maximum AC-Coupled Input 19,200W
Grid Pass-Through Up to 200A
Peak Inverter Efficiency 97.6%
Battery Communication CAN, RS485, RS232, dry contact and Wi-Fi capabilities
Battery Enclosure Rating IP66
Inverter Enclosure Rating IP65 / NEMA 3R
Battery Mounting Wall mounting with an included bracket for each battery; ground mounting requires optional Pytes brackets
Battery Dimensions Approximately 27.10 Γ— 10.24 Γ— 27.56 inches each
Combined Battery Weight Approximately 576 lb total, 288 lb each
Inverter Dimensions Approximately 33.98 Γ— 18.27 Γ— 11.10 inches
Inverter Weight Approximately 137 lb
Battery Expansion Up to 16 Pytes V16 batteries and 256kWh total, subject to system design

Battery Safety and Certifications

  • Built-in aerosol fire-suppression system
  • Emergency shutdown capability
  • Integrated battery-management system
  • Integrated low-temperature heating film
  • UL 9540
  • UL 9540A
  • UL 9540B
  • UL 1973
  • UN38.3

Sol-Ark Certifications

  • UL 1741 3rd Edition SB
  • UL 1741 CRD-PCS
  • IEEE 1547-2018
  • IEEE 2030.5 interoperability
  • UL 1699B PV DC arc-fault protection
  • CSA C22.2 No. 107

Warranty

  • Sol-Ark 18K: 10-year manufacturer warranty
  • Each Pytes V16: 10 years or 8,000 cycles, whichever occurs first, subject to manufacturer terms and operating conditions

Professional Installation Required

This equipment should be designed, installed and commissioned by a qualified solar or electrical professional. The installer must confirm conductor sizing, busbars or combiners, equal-length battery cabling, overcurrent protection, disconnects, grounding, communication cabling, firmware compatibility, battery charge limits, permitting requirements and compliance with all applicable electrical and building codes.

The inverter’s battery charge and discharge limits must be programmed for the two-battery bank. Both batteries should be commissioned at a compatible state of charge and connected in accordance with Pytes and Sol-Ark requirements.

Frequently Asked Questions

Are the Sol-Ark 18K and Pytes V16 compatible? +

Yes. Pytes documents closed-loop integration between the V16 and Sol-Ark 18K through compatible battery communication. The correct communication cable, firmware and inverter settings must be used during commissioning.

Can this system provide whole-home backup? +

The Sol-Ark 18K has the inverter capacity to operate many household loads, and two V16 batteries provide approximately 15.36kW of recommended continuous battery-bank discharge output. Whether the system can back up an entire home without load management depends on the home’s actual loads, motor-starting requirements, battery state of charge and support available from solar or a generator.

How long will the 32kWh battery bank run my home? +

Runtime depends on how much power the home is using. Essential loads can operate much longer than central air conditioning, electric water heating, EV charging or other high-demand equipment. Actual usable energy is lower than the nominal 32kWh rating after reserve settings and system losses. A professional load analysis is the best way to estimate backup duration.

How is this different from the one-battery kit? +

This kit doubles nominal storage from 16kWh to 32kWh and approximately doubles the battery bank’s available charge and discharge capability. That provides longer backup and better support for high-demand loads during a grid outage.

Can I add more Pytes V16 batteries later? +

Yes. The Pytes V16 platform is expandable up to 16 batteries, subject to proper system design. Expansion should follow Pytes requirements for battery age, state of charge, firmware, cabling, busbars or combiners and overcurrent protection.

Can the system operate without solar panels? +

Yes. The system can be configured to charge the batteries from the grid and provide backup power when the grid fails. Available operating modes may depend on local utility rules and installer programming.

Does the Sol-Ark 18K support a generator? +

Yes. The inverter includes a dedicated generator connection and generator-start capabilities. Generator compatibility, wiring and operating parameters must be verified by the installer.

Can the equipment be installed outdoors? +

Each Pytes V16 has an IP66 enclosure rating, and the Sol-Ark 18K is rated IP65/NEMA 3R. Installation must still follow the manufacturers’ clearance, temperature, mounting and environmental requirements.

Are solar panels included? +

No. This kit includes one Sol-Ark hybrid inverter, two Pytes V16 batteries and the battery accessories listed above. Solar panels, racking and other balance-of-system components can be selected separately based on the installation.

Do the batteries include mounting brackets and cables? +

Each V16 includes a wall-mounting bracket, one set of V16 power cables and communication accessories. The installer must determine whether additional cabling, busbars, combiners, overcurrent protection or disconnects are required for the final system design.