PHI 655™ Battery

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The PHI 655™ Wh 60 Amp deep-cycle Lithium Ferro Phosphate (LFP) battery is optimized with proprietary cell architecture, power electronics, BMS and assembly methods. It is modular, lightweight and scalable. 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.

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CE Certification SimpliPhi Power
UN DOT Certification SimpliPhi Power
RoHS Certification SimpliPhi Power

  • Description
  • Specifications
  • Additional Info
  • Documentation


  • 12V and 24V LFP batteries with proprietary architecture and Battery Management System (BMS)—do not require ventilation, cooling or thermal regulation
  • Compatible with all industry standard inverter/charger controllers
  • Drop in replacement for lead acid
  • LFP is the safest, most environmentally benign Lithium Ion chemistry available—no risk of thermal runaway or fire
  • No AC or toxic liquid cooling—nominal parasitic drain—long cycle life
  • Non-toxic and non-hazardous recyclable materials


PHI 655TM 12V 24V
DC Voltages – Nominal 12.8V 25.6V
Amp Hours 51.2Ah 25.6Ah
Rated Wh Capacity @ C/2 655Wh 655Wh
Max Output Capacity 50A 25A
Max Charge Current 25A 12.5A
DC Voltage Range 10 to 14.4 20 to 28.8
Depth of Discharge up to 100% up to 100%
Operating Efficiency 98% 98%
Operating Temp -4° to 140°F (-20° to 60°C) -4° to 140°F (-20° to 60°C)
Charge Temp 32° to 120°F (0° to 49°C) 32° to 120°F (0° to 49°C)
Self-Discharge Rate <1% loss per month <1% loss per month
Cycle Life 10,000+ 10,000+
Memory Effect None None
Warranty Period 10 Years 10 Years
Dimensions 11.25 x 5.25 x 6.25 inches/0.21 cu ft (28.58 x 13.34 x 15.88 cm/0.06m3) 11.25 x 5.25 x 6.25 inches/0.21 cu ft (28.58 x 13.34 x 15.88 cm/0.06m3)
Weight 16.2 lbs (7.35 kg) 16.2 lbs (7.35 kg)

Additional Info

DIMENSIONS: 11.25 x 5.25 x 6.25 inches/0.21 cu ft (28.58 x 13.34 x 15.88 cm/0.06m3)
WEIGHT: 16.2 lbs (7.35 kg)
  • Meets transport safety weight requirements: Less than 35 kg including packaging
  • UN3480, Lithium Ion batteries, 9, II
  • UL and CE listed, UN/DOT and RoHS compliant components
  • Designed and built in California, USA