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SimpliPhi Model Number PHI 3.8 48V
Nominal Voltage 51.2V
Nominal Energy 3,800 Wh
Terminal 3/8"
Capacity 75 AHr
Continuous Current 37.5 A (1.92 KW DC)
Peak Current 60 A for 10 minutes
Weight (lbs) 78.24 lbs. (35.5 kg)
Dimensions 13.5" H x 14" W x 8" D
(15.5" H w/ terminals)
Warranty 10 Years or 10,000 cycles
(@ 80% DOD)
Certifications • UN 3480, Lithium Ion battery contained in equipment, 9, II
• UL, CE, UN/DOT and RoHS compliant components - UL Compliant

SimpliPhi PHI 3.8 48V Lithium Ion Battery

SKU PHI 3.8 48

SimpliPhi PHI 3.8 48V Lithium Ion Battery

SimpliPhi Phi 3.8

Design an energy storage system for your home, business or RV with a safe, simple, reliable and practical lithium ion battery solution. The PHI 3.8 is designed and manufactured in California, USA.

The PHI 3.8 kWh 48V 75AHr deep-cycle Lithium Ferro Phosphate (LFP) battery is optimized with proprietary cell architecture, power electronics, BMS and assembly methods. It is modular, light-weight and scalable for installations that range from kWh to MWh.

Provides power security and seamless integration of renewable and traditional sources of energy in conjunction with or independent of the grid: net zero, peak shaving, emergency back-up, portable and mobile.

Chemistry Lithium Ferro Phosphate (LFP) The safest Lithium Ion chemistry available No cobalt, risk of thermal runaway or fire
OCPD Built-in, accessible 80 Amp DC breaker on/off switch
BMS Built-in Battery Management System
Compatibility Compatible with all industry standard inverters and charge controllers
Maintenance Maintenance-free
No ventilation, cooling or thermal regulation required

SimpliPhi PHI 3.8 48V Benefits

Wall of SimpliPhi batteries


• Energy and power in one battery
• Drop-in replacement for existing lead acid battery banks
• On- or off-grid
• No thermal monitoring, cooling, fire suppression or ventilation equipment required
• No maintenance


• 10-year warranty
• High efficiency rate = more usable power for you
• Provides primary or back-up power for on- or off-grid homes and businesses
• Delivers multiple charge/discharge cycles per day
• Operates in broad temperature range of -4 to 120 degrees F
• Proven in the field for 9+ years

SimpliPhi Phi 3.8 lithium ion battery system


• Stores electricity from solar, wind, diesel/ gas generators, the grid or any combination
• Modular and scalable: seamlessly add more capacity if energy needs grow
• Install in small spaces
• Indoor and outdoor use in all climates


• Environmentally benign and non-toxic Lithium Iron Phosphate (LFP)
• No Cobalt - no hazards
• No risk of overheating or fire
• No fumes or off-gassing

Contact us toll-free: (877) 297-0014.

SimpliFi PHI 3.8  Lithium-ion Battery review

SimpliPhi PHI 3.8 48V Lithium Ion Battery Review

Scalable Power Security

SimpliPhi Solar Battery Systems

Build power security with storage solutions for residential and commercial battery banks that provide grid tied back-up, primary, peak and uninterrupted off-grid power reserves.

Proprietary Engineering

SimpliPhi batteries feature non-toxic, non-hazardous Lithium Ferro Phosphate (LFP) chemistry combined with proprietary architecture, circuitry, methods of assembly and Battery Management System (BMS) that offer the highest efficiency charge & discharge rates without heat build-up or cumbersome thermal monitoring.

Proven Performance

Reliable and rugged integrated energy storage and management systems deployed across industries since 2002: film, residential, commercial, military, emergency, agricultural and utility for both on and off-grid power resiliency. SimpliPhi does not beta test on their customers.

Warranty & Technical Support

A portfolio of enduring power storage solutions that come with a robust Warranty and all the technical expertise and support you and your project could possibly need. Our customers are our partners for life.

SimpliPhi PHI 3.8 battery voltage vs. discharged capacity

Solar Electric Supply specializes in supplying dealer, contractor, government and industrial accounts worldwide with reliable, cost-effective Li-ion powered solar solutions.

SimpliPhi Batteries  ·  All Energy Storage Batteries  ·  Contractor Discounts Available

OEM, Distributor, System Integrator, Government, VAR, Dealer, Contractor, MWBE, International, and Reseller Discounts

Contact us toll-free: (877) 297-0014 for expert assistance and wholesale prices for the SimpliPhi PHI 3.8 48V battery.