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SimpliPhi Power BOSS.12 Enclosure (holds up to 12 batteries)

SimpliPhi Power BOSS.12 Enclosure (holds up to 12 batteries)

Regular price $3,980.00 USD
Regular price Sale price $3,980.00 USD
Sale Sold out

Includes 8' 4/0 Battery Inverter Cables (order busbars for individual battery wiring)


Expand your energy storage by 45.6 kWh with the BOSS.12. This carbon steel enclosure is a NEMA 3R-rated weather resistant battery bank housing and wiring solution with built-in shelving. Holding up to 12 PHI batteries, this enclosure can be free-standing or pad mounted. 

The BOSS consolidates a PHI battery bank paired with any SimpliPhi-compatible Balance of System equipment and can provide additional battery capacity to a SimpliPhi ExprESS or AccESS fully integrated unit. They include terminal blocks for electrical wiring in parallel, busbar-to-terminal block battery cabling, and terminal block to inverter cabling when ordered. The BOSS.12 is UL 9540 Certified when used with our AccESS 12K with Sol-Ark and with Sol-Ark 12K Inverters.


  • NEMA 3R-rated, weather- resistant carbon steel enclosures are easily installed and assembled.

  • Corrosion-resistant fan prevents PHI batteries from reaching maximum 120°F charging temperature.

  • Energized with cobalt-free, safe and non-toxic PHI batteries that outperform alternative solutions.
  • Manufactured in the United States


Dimensions (W x H x D) 29.5” W x 76”H (w/feet) x 20” D / 75 cm W x 193 cm H (w/feet) x 51 cm D
Weight 428 lbs (194.138 kg.) w/o batteries
Enclosure Rating NEMA 3R Outdoor rated
Mounting Free-standing or Pad-mounted
Built-In DC Connections 2 x 5-point Terminal Busbars, 3/8” lugs, 650 ADC
Charging Temperature 32°F to 120°F (0°C to 49°C)
Maximum Contained Battery Quantity Twelve (12) AmpliPHI or PHI 3.8, 3.5 or 3.4 batteries (each battery measuring 13.5” W x 15.5” H w/terminals x 8” D)
Enclosure Warranty Period 2 years

Specifications are typical/nominal. Subject to change without notice.

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Generac Installation Checklist

Complete Permits

Additional considerations may include contacting
your homeowners association. The
installation cannot begin until all
required permits have been issued.

Permits include:
• Site Survey
• Electrical Permit
• Plumbing Permit
• Building Permit

Upgrade Fuel System
• Gas meter/LP tank (if required)
• Contact underground utility

Electrical Service
• Day of installation
• Inspection (if required)

Install Generator
• Level chosen location
• Install base
• Mount transfer switch
• Run conduit and wiring
• Install fuel line

Follow Up
• Activation
• Demo a simulated outage and turnover the generator keys
• Fuel pressure check
• Final inspection (if required)
• Review service and monitoring