FREE SHIPPING on orders over $100 for qualified items.

Open Mon-Fri 8 to 5 PST


SimpliPhi PHI 3.5 kWh 48v 69 Ah LFP Battery

SimpliPhi logo
SimpliPhi Batteries:
  • Drop-in upgrade for traditional lead-acid batteries
  • Compared to regular lithium-ion, LiFePo is safer, contains no toxic minerals, can better handle temperature extremes, and can sustain more charge cycles
  • Built-in Battery Management System: No external ventilation, cooling, or heating required.
  • Designed and built in California

Product Information

Model Part No. Voltage Amp Hours Type Warranty Size & Weight Price
SimpliPhi PHI 3.5 kWh 48v 69 Ah LFP Battery958010548VDC69AhLFP (Lithium Ferro Phosphate)10-years13.5 × 8 × 14 in
75.5 lbs
Do you have questions about our SimpliPhi batteries, or questions about solar in general? Give us a call at 1-877-217-8513.


PHI 3.5 kWh Battery

Simpliphi batteries utilize revolutionary Lithium Ferro Phosphate (LFP) battery technology. Simpliphi chose this chemistry because of its reliability, long cycle life, safety and maintenance-free operation. Each Simpliphi battery includes an integrated battery management system (BMS) which regulates the batteries ensuring they operate at optimal efficiency. The built-in circuit breaker protects the battery system from short circuits. Simpliphi batteries offer long cycle life with maintenance-free operation and no dangerous off-gassing or fumes. These batteries are suitable for a variety of applications, independent of the utility grid or in conjunction with it: net zero, peak shaving, emergency back-up, off-grid, portable and mobile.
Back to Top

Features & Attributes

  • Dimensions (LxWxH): 13.5 × 8 × 14 inches
  • Weight: 75.5 lbs
  • Built-in accessible 80 Amp DC breaker On/Off switch - increases safety and simplifies installations
  • LFP batteries with proprietary architecture and Battery Management System (BMS)—do not require ventilation, cooling or thermal regulation
  • Compatible with all industry standard inverter/charge controllers
  • Dropin replacement for lead acid
  • Multiple batteries can be wired in parallel for increased capacity (no series wiring)
  • LFP is the safest, most environmentally benign Lithium Ion chemistry available—no risk of thermal runaway or fire
  • No AC or toxic liquid cooling—negligible parasitic drain—long cycle life
  • Non-toxic and non-hazardous recyclable materials
  • Approved CA SGIP Advanced Energy Storage (AES) rebate program supplier
  • MPN: PHI 3.5 48v
Back to Top


SimpliPhi PHI 3.5 kWh 48v 69 Ah LFP Battery

Spec. Sheet
Installation Manual
Back to Top