24V 3.5kWh* Commercial Battery

24V 3.5kWh* Commercial Battery

Fixed Battery Pack - Fi3.5

  • NEW voltage offering!
  • Available December 2023.
  • The Fi3.5 is an addition to Vanguard’s current battery portfolio, offering a lower voltage option for OEMs.
  • The Fi3.5 Commercial Battery is the ideal replacement for 24V lead acid batteries.
  • This new battery has the ability to serve the lift access, cleaning and construction industries.


Unmatched Durability

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

Levels of Safety

The Vanguard™ Fi Series Commercial Battery packs have built-in levels of safety including wire bonding, tier plates, redundant contactors, and an on-board BMS.

Flexible, Integrated System

The integrated Lithium-Ion battery system delivers versatile power and performance that can be configured for multiple capacities and voltages.

Black & White Troubleshooting

No guesswork when it comes to troubleshooting on the job.

Zero Emissions

Clean energy that supports the ability to work indoors and of course outdoors.

Assembled in the USA

The 24V Fi3.5 is designed, engineered, and assembled in the United States.


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Fi Series Name
Nominal Voltage (V)
Charge Voltage (per IEC 61960)
Discharge Cutoff Voltage
Nominal Capacity per IEC 61960
135.9 Ah / 3.5 kWh
Communication Protocols
CAN J1939
Discharge Temperature Range
-20°C to +60°C
Storage Temperature Range (1 Month / 1 Year)
-20°C to +60°C / -20°C to +25°C
Charge Temperature Range
0°C to +45°C
Marketed Durability
Up to 2,000 cycles to 80% initial capacity
Discharge Current, Nominal
Parallel Capable
Yes, up to 10 batteries

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

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