
© SIMPLIPHI POWER, INC.
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1
MODEL NO. 053003
Installaon Manual
BOSS.6
6 Baery Only Storage System
BOSS.6
Not for reproduction

© SIMPLIPHI POWER, INC.
SIMPLIPHIPOWER.COM | 805-640-6700 | BSREV202111121120
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MODEL NO. 053003
SimpliPhi Your Energy
Security and Independence
and gain control of your own power.
SimpliPhi Power helps you manage your power as a personal resource.
Anytime. Anywhere. SimpliPhi energy storage optimizes integration of any
power generation source – solar, wind, generator – on or off grid, and protects
your home and mission-critical business functions from power outages and
intermittency. SimpliPhi storage technology reduces operating temperature
constraints, toxic coolants and the risk of thermal runaway. Safe lithium ferrous
phosphate (LFP). No cobalt. No toxic hazards.
SimpliPhi’s battery technology utilizes the industry’s most environmentally benign
chemistry (LFP) combined with proprietary architecture and power electronics
(BMS) to create a portfolio of high performance, scalable and enduring energy
storage solutions that provide power security, resilience and daily cycling for
savings on your utility bill – all with a 98% efficiency rate.
SimpliPhi Power offers proprietary, commercially available energy storage and
management systems that are safe, non-toxic, reliable, durable, efficient, highly
scalable, and economical over the lifetime of the PHI Battery.
Not for reproduction

© SIMPLIPHI POWER, INC.
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MODEL NO. 053003
Table of Contents
1.0 – Important Safety Informaon .............................................................................................................. 4
1.1 – Safety Instrucons ............................................................................................................................... 4
1.2 – Limitaons of Use ................................................................................................................................ 5
2.0 – Product Descripon ............................................................................................................................... 5
2.1 – Introducon .......................................................................................................................................... 5
2.2 – Overview ............................................................................................................................................... 5
2.3 – Specicaons ........................................................................................................................................ 6
3.0 – Installaon ................................................................................................................................................ 6
3.1 – Inspecon .............................................................................................................................................. 6
3.2– Unpacking .............................................................................................................................................. 6
3.3 – Assembling the BOSS.6 Enclosure .................................................................................................. 9
4.0 – Care & Maintenance............................................................................................................................... 13
5.0 – Technical Support .................................................................................................................................... 13
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MODEL NO. 053003
CAUTION: DO NOT VOID YOUR WARRANTY- FOLLOW THESE INSTRUCTIONS CAREFULLY AND
REVIEW WARRANTY DOCUMENT PRIOR TO INSTALLATION
1.0 – IMPORTANT SAFETY INFORMATION
1.1 – Safety Instrucons
1. Before assembling or using the SimpliPhi Baery Only Storage System for Six Baeries (BOSS.6), read all instrucons and
cauonary markings included in this manual.
2. Perform all electrical work on the BOSS.6 Enclosure in accordance with local, state and federal electrical codes.
3. The BOSS.6 Enclosure is NEMA 3R-rated for a degree of protecon against debris, as well as rain, sleet and ice. The
Enclosure is NOT waterght and should therefore be protected against excessive exposure to liquids. For extreme
weather protecon, Rain Hoods are available (RH-44) and can be ordered with the BOSS.6 Enclosure.
4. To reduce the chance of short-circuits and/or electrical shock, always use insulated tools when installing or working
with this equipment. For the same reason, remove all jewelry such as rings, watches, bracelets, etc., and wear insulated
rubber electrical gloves when installing or performing maintenance on the BOSS.6 Enclosure or the PHI baery modules
contained within.
5. Before assembling or using the BOSS.6, inspect the shipment and the product itself for signs of damage. Do not use the
BOSS.6 Enclosure if there are indicaons that it has been damaged during shipping or otherwise. Refer to Secon 3.1 –
Inspecon of this Guide for further instrucon.
6. Do not dismantle the BOSS.6 Enclosure; there are no user-serviceable parts contained in this product. Doing so will Void
the Warranty.
7. The BOSS.6 Enclosure is designed for the housing and wiring of up to 6 SimpliPhi PHI 3.8, 3.5, or 3.4 kWh baeries
(measuring ~13.5” wide x 15.5” high with terminals x 8.1” deep) or up to 6 SimpliPhi PHI 2.9, 2.7 or 2.6 kWh
baeries (measuring 11.25” W x 12.75” high with terminals x 9.5” deep). Check with SimpliPhi Technical Support
(techsupport@simpliphipower.com) prior to using the BOSS.6 Enclosure with any other PHI baery models.
8. Prior to installing or performing maintenance on the BOSS.6 Enclosure, turn all included PHI Baery module built-in
circuit breakers’ “ON/OFF” switches to the “OFF” posion, and disconnect all wiring leading from the baeries to the
ExprESS fully integrated unit or other Balance of System equipment. Doing so will minimize the risk of shock or sparks
during the baeries’ installaon.
Before commissioning the ExprESS or BOSS.6 Enclosure with Baeries, PHI baeries MUST be fully charged. Failure to
do so will Void the baeries’ Warranty.
9. In addion to the instrucons outlined in this BOSS.6 Enclosure manual, adhere to all installaon and commissioning
protocols outlined in the PHI Baery Installaon Manual. Failure to do so will Void the baeries’ Warranty.
10. Verify polarity at all baery module connecons with a standard voltmeter before:
A. Energizing the system and,
B. Turning the PHI Baery’s circuit breaker “ON/OFF” switch to the “ON” posion. Reverse polarity at the PHI Baery
terminals will Void the Warranty and destroy the PHI Baeries.
11. Do not operate if the PHI Baery has been dropped or damaged in any way during shipping or otherwise.
Not for reproduction

© SIMPLIPHI POWER, INC.
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MODEL NO. 053003
1.2 - Limitaons of Use
The BOSS.6, ExprESS unit and PHI baery modules are not intended for use in connecon with life support systems or other
medical equipment or devices.
2.0 - Product Descripon
2.1 - Introducon
This installaon guide covers the recommended installaon of the BOSS.6 Enclosure. More informaon on SimpliPhi
products, including the SimpliPhi baeries that the Enclosure is designed to house, can be found on our website:
hp://simpliphipower.com/.
2.2 - Overview
The BOSS.6 Enclosure is intended for the housing and wiring of up to six (6) PHI 3.8, 3.5 or 3.4 kWh deep-cycle Lithium
Ferro Phosphate (LFP) baeries, or up to six (6) PHI 2.9, 2.7 or 2.6 kWh LFP baeries. The Enclosure may be used with the
AccESS or ExprESS fully integrated units, or as a PHI Baery enclosure for any other installaon with SimpliPhi compable
equipment.
When the BOSS.6 Enclosure is used with the AccESS or ExprESS fully integrated units, the addional Enclosure containing
addional PHI baeries allows for an increased amount of available energy storage capacity, beyond the PHI Baeries already
included in the fully integrated AccESS or ExprESS units.
As outlined in the PHI Baery Installaon Manual, baeries must always be connected in parallel (Posive to Posive /
Negave to Negave). Any bussing used within the BOSS.6 Enclosure must be used to parallel the baeries only; no series
connecons are permied and will destroy PHI baeries and Void the Warranty. More detailed connecon instrucons are
included in later secons of this manual.
All PHI baeries must be fully charged BEFORE commissioning. Failure to do so will Void the Warranty.
Not for reproduction

© SIMPLIPHI POWER, INC.
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MODEL NO. 053003
2.3 - Specicaons
Review Table 1 below for BOSS.6 Enclosure specicaons, including physical dimensions, Warranty period and technical data.
Table 1 – BOSS.6 Enclosure Specicaons
3.0 - Installaon
3.1 - Inspecon
Immediately inspect the BOSS.6 Enclosure upon its arrival to the site. Inspect the packaging as well as the BOSS.6 Enclosure
itself for signs of rough handling or damage. If there is any evidence of damage, record the damage on the receiving
document before signing for receipt of the equipment. Damage claims should be led directly with the carrier. Not doing so
can limit your ability to claim damage of equipment with the carrier.
3.2 - Unpacking
Aer the shipment’s inspecon is completed, perform the following steps to unpack the equipment:
1. Open all cartons.
2. Compare the items received against the packing list to see if any items are missing. If an item is missing or damaged,
contact SimpliPhi Power (805-640-6700).
3. Remove all packing materials, envelopes, and boxes from the cartons. Keep all packing materials and cartons in case you
need to transport or ship the unit at a later date.
The BOSS.6 Enclosure shipment includes the items listed in Table 2 on the following page.
BOSS.6 Enclosure
WEIGHT 180 lbs. (81.6kg.) Without Baeries
DIMENSIONS
36” W x 36”H (40” w/feet) x 16” D /
91.4 cm W x 91.4 cm H (101.6 cm w/feet) x 40.64 cm D
MOUNTING Free Standing or Pad Mounted
KNOCK-OUTS 3 x Trade Size 1 Knockouts on each side
WARRANTY PERIOD 5 Years
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© SIMPLIPHI POWER, INC.
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MODEL NO. 053003
Table 2 – Items Included in the BOSS.6 Enclosure Shipment
Figure 1 - Unpacked Enclosure
Not Included
The BOSS.6 Enclosure does not include:
Interconnecng busbars or baery cables for the purpose of paralleling the baeries.
• Interconnecng busbars for paralleling two or three PHI baeries (SKU numbers BB-2-6 and BB-3-6, respecvely)
are sold separately and may be purchased from any SimpliPhi distributor: hps://simpliphipower.com/distributors/.
• The built-in 5-point terminal blocks includes 3/8” posts. Cables wired to and from the terminal blocks should
therefore have 3/8” lugs.
Item Number Descripon Quanty
1 BOSS.6 Carbon Steel Enclosure
1
2 Shelf (Mounted Within the Enclosure) 1
3 Built-in Enclosure Vent
2
7 Built-in Corrosion-Resistant Equipment-Cooling Fan
1
8 ¼”-20 ½” Long High Strength Steel Hex Head Screw
2
9 ¼” Stainless Steel Washer
2
10 1-5/8” High Channel ¼”-20 Strut Channel Nut with Spring
2
16 Built-in Posive 5-Point Terminal Block
1
17 Built-in Negave 5-Point Terminal Block
1
18 Enclosure Filter
1
19 10-32 Pan Head Screw
4
NP 96” 2/0 Baery Inverter Cables (one negave, one posive)
2
Not for reproduction

© SIMPLIPHI POWER, INC.
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MODEL NO. 053003
Number of PHI
Baeries
Recommendaon
6
Order 2 x BB-3-6 busbar sets (2 posive, 2 negave) with 4 total 1/0 AWG Arcc Ultraex Blue® cables with 3/8” lugs (for
busbar-to-terminal block wiring connecons).
5 Not Supported- Consider increasing baery bank to 6.
4
Order 2 x BB-2-6 busbar sets (2 posive, 2 negave) with 4 total 1/0 AWG Arcc Ultraex Blue® cables with 3/8” lugs.
3
Order 1 x BB-3-6 busbar set (1 posive, 1 negave) with 2 total 1/0 AWG Arcc Ultraex Blue® cables with 3/8” lugs.
2
Order 1 x BB-2-6 busbar set (1 posive, 1 negave) with 2 total 1/0 AWG Arcc Ultraex Blue® cables with 3/8” lugs.
CAUTION: Arcc Ultraex Blue® cables are sized dierently than standard THHN/THWN wire:
hp://www.polarwire.com/properes-specs.pdf . Use dierent wire sizes if dierent make cable is used.
Always adhere to the Naonal Electrical Code.
• Busbar and cabling kits can be ordered from any SimpliPhi distributor for the specied number of baeries to be used within
the BOSS.6 Enclosure. Please refer to Table 3 for guidance.
All baeries contained within the PHI baery bank must be idencally grouped (i.e. do not use both the BB-2-6 and BB-3-6
busbar products within the same PHI baery bank. Doing so will Void the Warranty on the PHI baeries.
Consider these limitaons when wiring fewer than 6 PHI baeries in the BOSS.6 enclosure.
Table 3 – Recommended Baery-to-Terminal Block Wiring
Terminal block-to-inverter cables are included with the BOSS.6 purchase. SimpliPhi typically uses two (one posive, one
negave) 96”-long 2/0 AWG Arcc Ultraex Blue® cables with 3/8” lugs for terminal block-to-inverter wiring for the BOSS.6.
However, the length and gauge of these cables may need to change depending on the Balance of System (BoS) equipment,
maximum potenal instantaneous power draw from the PHI baery bank, distance between the PHI baery bank and the
BoS equipment, ambient temperature and local codes.
Required Tools for Installaon
The following tools are required to assemble the BOSS.6 Enclosure:
• Torque Wrench
• 9/16” socket
• 11/16” socket
• 17mm socket
• Protecve wear
Not for reproduction

© SIMPLIPHI POWER, INC.
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MODEL NO. 053003
CAUTION: Do not aempt to loosen the large brass nut at the base of the baery terminals.
Doing so will Void the Warranty
Installaon Site Locaon
The BOSS.6 Enclosure may be installed indoors or outdoors mounted onto a concrete pad. The BOSS.6 Enclosure is NEMA
3R-rated for a degree of protecon against debris, as well as rain, sleet and ice. The Enclosure is NOT waterght and should
therefore be protected against excessive exposure to liquids. For extreme weather protecon, Rain Hoods are available (RH-
44) and can be ordered with the BOSS.6 Enclosure. Keep the BOSS.6 Enclosure isolated from ammable materials or vapors.
Clearance Requirements
The BOSS.6 Enclosure can be installed directly adjacent to the AccESS or BOSS.6 fully integrated units. Ensure that any
venlaon is not blocked on the sides of the AccESS or BOSS.6 units. If mounng several cabinets together, allow for at least
8” of clearance on the external sides not adjacent to each other for venlaon, and 4 feet of clearance in front of the BOSS.6
Enclosure and/or AccESS or ExprESS units for front door access. The BOSS.6 Enclosure can be placed ush against a wall,
without any clearance at the back of the Enclosure.
Knock-Out Locaon
Three Trade Size 1 knockouts are located on either side of the BOSS.6 Enclosure. They can be used for roung baery cables
from the enclosure to the inverter’s power panel. Not all knockouts must be used.
Pad Mounng
The BOSS.6 Enclosure must be installed and secured on level concrete. For a pre-cast concrete pad, a 4” minimum thickness
is required.
The BOSS.6 is not suited for wall mounng. Any aempt to wall-mount the BOSS.6 Enclosure will Void the Warranty.
Six 1-inch knockouts are located in the base and mounng feet of the BOSS.6 for tool accessibility when mounng the
BOSS.6 to a concrete pad. Cover knockout holes with sealing tape aer pad mount installaon, and prior to installing the PHI
Baeries into the base of the cabinet. Failure to seal the knockout holes will Void the warranty.
Secure the BOSS.6 to the concrete with concrete anchors, such as threaded rods, masonry bolts, or carriage bolts, minimum
½” diameter.
3.3 – Assembling the BOSS.6 Enclosure
4. Make sure all PHI baery module circuit breakers are in the “OFF” posion. Prepare the baery modules for installaon
by removing all plasc terminal covers, 11/16” stainless steel hex nuts and 3/8” lock washers from the baeries’ terminals
and set aside.
Not for reproduction

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MODEL NO. 053003
5. Install the baery modules in the Enclosure starng at the boom of the Enclosure.
6. Arrange up to three baery modules on each shelf. Orient the modules so that the baery terminals point forward
toward the door, with the posive posts nearest the boom of the Enclosure. Illustraons shown are for six baeries per
unit.
Figure 2 –6 PHI Baery Module Arrangement within the Enclosure
7. Aer securely placing all the baery modules in the BOSS.6 Enclosure, conrm that all the baery module circuit
breakers are sll in the “OFF” posion.
8. Aach negave interconnecng busbars onto the baeries’ negave terminals. Secure the busbars to the baeries’
terminals using a 11/16” wrench socket to ghten the 3/8” at washers (included with cabinet), 3/8” lock washers and
11/16” stainless steel hex nuts (originally included on the baeries). Tighten the nuts to 160 in-lbs.
9. Aach posive interconnecng busbars directly onto the baeries’ posive terminals. Secure the busbars to the baeries’
terminals using a 11/16” wrench socket to ghten the 3/8” at washers (included with cabinet), 3/8” lock washers and
11/16” stainless steel hex nuts (originally included on the baeries). Tighten the nuts to 160 in-lbs.
Interconnecng busbars are not included with Enclosure, please refer to Table 3 for ordering guidance.
CAUTION: Do not place any material (such as a washer) between the large brass nut at the base of the
baery terminal and the interconnect.
(Refer to the Connecng a busbar to terminals on a SimpliPhi baery video.)
Posive baery terminals are
nearest the boom of the
enclosure. Posts point towards the
Enclosure’s door.
Not for reproduction

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MODEL NO. 053003
Figure 3 – Interconnecng Busbars Aach to PHI Baery Terminals
Interconnecng busbars are not included with Enclosure, please refer to Table 3 for ordering guidance.
10. Wire the negave interconnecng busbar(s) (used to parallel the baeries) to the built-in negave 5-point terminal block.
A. Secure the included cable to the ends of each negave interconnecng busbar (two cables total are needed for two
negave interconnecng busbars).
• Busbars and cables are not included, but recommendaons as outlined in Table 3 of this Manual may be purchased
directly from SimpliPhi. Otherwise, the installer may size busbar-to-terminal block cables according to the number of
baeries connected in parallel and in accordance with local codes and purchase separately.
• When busbar kits are ordered from SimpliPhi or from a SimpliPhi distributor, they will come with the 3/8” at
washers, 3/8” lock washers and 3/8”-16½”-long brass hex head screws needed to secure cables to the ends of the
busbars, along with the correct posive and negave cables to wire from the bus bars to the terminal blocks. These
connecons should ghten to a torque value of 120 in-lbs.
3 Baery Busbars
SKU# BB-3-6
2 Baery Busbars
SKU# BB-2-6
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MODEL NO. 053003
B. Secure the cable lug(s) to the negave 5-point terminal block using a 7/16” wrench socket to ghten the ¼”-20
nut(s). The cables should include 3/8” lugs to t onto the 3/8” posts on the 5-point terminal block.
11. Wire the posive interconnecng busbar(s) to the built-in posive 5-point terminal block.
A. Secure the included cable to each posive interconnecng busbar.
B. Secure the cable lug(s) to the posive 5-point terminal block using a 17mmwrench socket to ghten the ¼”-20 nut(s).
The cables should include 3/8” lugs to t onto the 3/8” posts on the 5-point terminal block.
Figure 4 – Cables Wired from Each Interconnecng Busbar to the 5-Point Terminal Busbar
3 Baery Busbars - SKU# BB-3
(interconnecng busbar to terminal
busbar wiring not included)
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MODEL NO. 053003
Remember, all Balance of System equipment must be programmed to SimpliPhi’s specied sengs and PHI
baeries must be fully charged before commissioning the system (i.e. before connecng the baeries to any
loads).
CAUTION: Turn the inverter’s main DC Disconnect on only AFTER ALL the built-in circuit breakers in the
PHI Baery bank are turned on. (Refer to the System Commissioning SimpliPhi baery video.)
12. Route baery-to-inverter cables, included with the BOSS.6 Enclosure through conduit (not included) using the
desired knockouts on the side of the BOSS.6 Enclosure. DC Posive and DC Negave cables run from the Enclosure’s
5-point terminal blocks to the inverter power panel of any equipment compable with SimpliPhi’s baeries (refer to
the Integraon Guides listed in the Product Documentaon secon of SimpliPhi’s web page for a list of compable
equipment: hps://simpliphipower.com/product-documentaon/).
13. Set the circuit breakers for all baery modules to the ON posion. PHI baeries must be fully charged before
commissioning.
This completes the installaon procedure for the BOSS.6 Enclosure.
4.0 – Care & Maintenance
The BOSS.6 Enclosure is designed to deliver many years of reliable service in a wide variety of environments. The BOSS.6 is
resistant to most environmental elements, but should be isolated from excessive water or moisture, extreme heat, solvents,
ammable materials, and environmental hazards.
If the BOSS.6 becomes dirty or grimy, wipe it as you would any kitchen cabinet. Do not use a pressure washer or hose to
clean the BOSS.6.
5.0 – Technical Support
For technical support related to your BOSS.6 Enclosure, please contact us as at:
805.640.6700
techsupport@simpliphipower.com
Not for reproduction
