AccESS™ with AmpliPHI™ Batteries and SimpliPHI® Inverter

AccESS™ with AmpliPHI™ 3.8kWh batteries and industry leading SimpliPHI 6kW Inverter is a fully integrated and pre-programmed energy storage and management solution. With closed-loop communications between inverter and batteries the system can self-monitor, provide backup to essential loads and lower utility bills, creating peace of mind for homeowners and businesses.


Stringent Safety-Tested System

Certified to UL 9540 and safety tested to UL 9540A.

Fully integrated Energy Storage Solution

Utilizing PHI or AmpliPHI batteries.

Lithium Ferro Phosphate (LFP) Chemistry

Safer, efficient and reliable access to power - 24/7.

Scalable for Any Energy Need

Easily scales to increase energy capacity with the BOSS.6 or BOSS.12 cabinets.


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Model Number
Cycle Life
10,000+ cycles (@ 80% DoD)
Certified to UL 9540, UL 9540A Fire Safety Tested, UL 1741 SA, IEEE 1547.1-2020, IEC/EN 62109-1&2, EN 61000-6-2&3, EN 61000-3-11&12
Enclosure Rating
NEMA 3R Outdoor Rated
Free-standing or Pad-mounted
Maximum Rated Unit kWh Capacity @ C/2
22.8 kWh, up to 164.2 kWh with additional BOSS cabinets
Usable kWh Capacity @ 80% DoD
18.2 kWh, up to 131.4 kWh with additional BOSS cabinets
Charging Temperature1
32°F to 120°F (0°C to 49°C)
600 lbs. (270 kg.) w/o batteries
Dimensions (W x H x D)
29.5” W x 76”H (w/feet) x 20” D /
75 cm W x 193 cm H x 51 cm D
Enclosure Warranty Period
2 years
Max Combined Output Power
6 kW
Max Combined Charge Current
100 A
Depth of Discharge
Up to 100% DoD
AC to AC Round Trip Efficiency
Battery Warranty Period
10 years
Operating Temperature1
-13 – 140 °F (-25 – 60 °C)
Inverter AC Connections
Communication Port - RS-232
Intelligent Slot - RS232 / USB, BMS, Wi-Fi
Solar PV Continuous Power
6 kW
Inverter AC Continuous Power
6 kW

1 Max operating conditions. Refer to Installation Manual for recommended conditions.
All specifications listed are typical/nominal and subject to change without notice.
Engineered and Manufactured in California, USA.