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EZGO Express S6 (2018-2022) 72V Lithium Battery Conversion Kit — Fleet Lithium

Regular price $3,78027 USD
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10-Year Warranty US-Based Support Ships From The USA 30-Day Guarantee Safe Chemistry

Upgrade Your E-Z-GO Express S6 to Fleet Lithium

Six passengers on 72V is the hardest job in the Express line, and the factory six 12V lead pack is the weak link — about 400 lb that fades exactly when you are fully loaded on a grade. The 76.8V Fleet Lithium pack holds voltage flat under that load, cuts roughly 250 lb, and carries a ten-year warranty.

Choose Your Capacity

Capacity Range* Best For
76.8V 105Ah Up to 50 mi Daily driving
76.8V 168Ah Up to 75 mi All-day use

What's Included

  • 76.8V NexGen Fleet Lithium LiFePO4 Battery (selected capacity)
  • CH8713 — 87.6V 13A LiFePO4 Smart Charger
  • BR4480 — Bracket Kit - E-Z-GO Express S4 / S6
  • AC0219 — AC Power Connector
  • Cable Set
  • Digital State-of-Charge Gauge
  • All mounting hardware

Key Specs

  • 300A NexGen BMS with 800A peak surge
  • Patent-pending fire suppression system
  • Built-in cold-weather heater — activates automatically below 32°F (standard, not an add-on)
  • Bluetooth monitoring — voltage, temp and cycle count from your phone
  • 10-year warranty — designed and assembled in the USA

Fitment Guide

OEM Model Years Factory Battery Tray Bracket Shipped
E-Z-GO Express S6 2018–2022 6x 12V BR4480

Which Do You Have?

A 2018 Express S6 could be built as either 48V or 72V. Count your batteries — six 12V is the 72V cart this kit fits.

Will It Work With My Controller?

The 350A 72V AC drive runs the 76.8V Fleet pack without modification.

Frequently Asked Questions

Will this fit my Express S6?

Yes, for the 72V six 12V build, using the same BR4480 bracket as the rest of the S-series.

Mine is a 2018 — how do I tell 48V from 72V?

Count the batteries. Six 12V is 72V; eight 6V is 48V.

Does it fit a factory ELiTE lithium S6?

No.

How long does installation take?

30–60 minutes with basic hand tools.

Does it work in cold weather?

Yes. The built-in heater activates automatically below 32°F — standard on every pack.

*Range estimates are maximums under ideal conditions (flat terrain, single rider, 12–15 mph, 70°F). Actual range varies with terrain, weight, speed, and temperature.

About Fleet Lithium

Built for demanding applications. Ready for everyday use.

Fleet Lithium develops high-output LiFePO4 battery systems for golf carts, LSVs, UTVs, marine, RV, and off-grid applications. We combine serious power capability with application-specific fitment, complete conversion components, and direct technical support.

Why Fleet is in our name

Fleet Lithium was built around equipment that gets used hard and cannot afford unreliable power.

Fleet Lithium was built around equipment that gets used hard and cannot afford unreliable power. Government fleets, rental operators, farms, hunting properties, and utility vehicles were our proving ground—not the modified-cart trend.

Those demanding applications shaped our approach from the beginning: build batteries with the power, control, and durability required for heavy daily use. That same overbuilt approach now serves individual golf cart, LSV, UTV, boat, RV, and off-grid customers who simply want a system they can depend on.

More than a battery in a box

A successful lithium conversion takes more than matching voltage and amp-hours.

Battery output, controller demand, charger programming, mounting, cabling, vehicle electronics, and communication protocols all have to work together. Fleet Lithium develops complete systems around the application so customers and installers do not have to piece together a conversion and hope the components are compatible.

Depending on the application, a Fleet Lithium solution may include the battery, matched charger, mounting hardware, cables, gauge or display integration, programming, installation guidance, and direct technical support.

Power and control built into the system

Fleet Lithium’s current NexGen battery management platform is rated for 300 amps of continuous discharge and up to 800 amps of peak output. It is designed to support real controller demand without treating every short power surge as an overload.

Select Fleet Lithium systems also support features such as OEM CAN-bus integration, cold-weather charging automation, Bluetooth monitoring, and GPS or geofencing for fleet security and operational control. These capabilities are application-dependent—not included with every battery.

  • 300A continuous / 800A peak surge discharge
  • OEM CAN-bus integration on select systems
  • Cold-weather charging, Bluetooth, GPS/geofencing where applicable

The application matters as much as the voltage

Two vehicles can use the same nominal voltage and still require completely different batteries, mounting solutions, chargers, cables, programming, or controller considerations.

Fleet Lithium researches vehicle generations, battery compartments, electrical architecture, controller demand, and charging requirements to develop application-specific configurations. Where fitment or installation requirements are verified, we document them clearly. Where additional validation is still required, we do not present an assumption as a confirmed fit.

Support and Warranty

Support from people who understand the entire system

Our support does not stop at the battery terminals. We help customers work through the battery, BMS, charger, controller, vehicle wiring, programming, and installation as one connected system.

Customers have direct access to technical support, product specifications, installation information, troubleshooting resources, warranty registration, and claims assistance.

Fleet Lithium Promise Series packs are backed by a 10-year warranty.

Visit the Support Center
10 Year Promise Series warranty
USA Technical support

Built for the way you actually use it

Whether you manage a working fleet, operate equipment on a farm, hunt remote property, commute in an LSV, cruise in a golf cart, spend the day on the water, or need dependable off-grid power, Fleet Lithium is built around the application—not just the battery specification.