48V 3.5kWh* Commercial Battery

48V 3.5kWh* Commercial Battery

Fixed Battery Pack - Fi3.5

  • NEW!
  • For maximum durability and protection, we pack our Cell Module Assembly (CMA) units in a diecast aluminum casing.
  • To serve both OEMs and operators, we have created a total solution that seamlessly integrates with OEMs’ equipment. Operators can expect instant, reliable power for the job at hand.
  • Our battery’s modular design was designed by expert engineers to apply power you can rely upon.
  • To get more information, download our battery literature.


Unmatched Durability

Diecast enclosure helps the battery withstand abuse, debris & dirt.

Maximum Efficiency

Designed to deliver a 2,000 cycle lifespan with virtually no scheduled maintenance.

Consistently Delivering Confidence

We are committed to safety and efficient operations, which is why the Battery Management System (BMS) constantly measures voltage and temperature.

Effortless Integration

There are two CANbus ports so OEMs can easily exchange information with the battery pack. One CANbus uses the J1939 automotive standard, while the other is designed for uncomplicated data transfer with the OEM's current communication network: No reprogramming of that network is required.

Uncomplicated Troubleshooting

Diagnostic protocols use standard CANbus procedures.


Robust three year commercial limited warranty. CLICK HERE for details.


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Fi Series Name
Lithium-Ion, 14S
Nominal Voltage (V)
Top Voltage (V) per IEC 61960
Top Voltage (V) for EV-Applications
Cutoff Voltage (V)
Nominal Capacity per IEC 61960
67.5 Ah / 3.5 kWh
Communication Protocols
J1939 (29-bit), CAN Open (11-bit)
Discharge Temperature Range
-20°C to +70°C
Storage Temperature Range (1 Month / 1 Year)
-20° to +60°C / -20°C to +25°C
Charging Temperature Range
-10°C to +45°C
Marketed Durability Hours/Cycles
2000 cycles to 80% initial capacity
Rated Charging Current (A)
Rate Discharging Current (A)
Parallel Capable
Yes, up to 10 batteries
Standard Charge Time
4 hours
Vanguard Charger Output Power (W)
1050 W
On-Board or Stand Alone

*Total energy measured using a 0.2C discharge per IEC 61960-3:2017

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