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EZGO RXV / Freedom RXV (2008-2022) 48V Lithium Battery Conversion Kit — Fleet Lithium

Regular price $1,95943 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 RXV to Fleet Lithium

Replace the four 12V or six 8V lead-acid batteries in your E-Z-GO RXV or Freedom RXV with a single 51V LiFePO4 pack from Fleet Lithium. Complete conversion kit — battery, charger, the bracket kit matched to your battery tray, cables and hardware included. Half the weight, twice the range, and no watering, ever.

Choose Your Capacity

Capacity Range Best For
51V 65Ah Up to 27 mi Stock carts only
51V 105Ah Up to 50 mi Daily driving, golf
51V 168Ah Up to 75 mi All-day use
51V 210Ah Up to 90 mi Max range, fleet use

65Ah is for stock motors/controllers only. If your RXV has performance upgrades, choose 105Ah or higher.

What's Included

  • 51V NexGen Fleet Lithium LiFePO4 Battery (selected capacity)
  • CH5618 — 58.4V 18A LiFePO4 Smart Charger
  • Application-specific RXV bracket kit — BR4402-R12 (four 12V plastic tray) or BR4402-R8 (six 8V metal tray), matched to the tray you confirm in the fitment finder
  • AC0219 — AC Power Connector
  • CB0917 — Cable Set (35.4")
  • 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, 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 RXV 2008–2015 Four 12V lead-acid BR4402-R12
E-Z-GO RXV 2016–2022 Plastic tray, four 12V BR4402-R12
E-Z-GO RXV 2016–2022 Metal tray, six 8V BR4402-R8
E-Z-GO Freedom RXV 2008–2015 Four 12V lead-acid BR4402-R12
E-Z-GO Freedom RXV 2016–2022 Plastic tray, four 12V BR4402-R12
E-Z-GO Freedom RXV 2016–2022 Metal tray, six 8V BR4402-R8

2016–2022 RXV carts shipped with two different battery trays, and each tray uses its own bracket. Lift the seat and count your batteries — four 12V in a plastic tray, or six 8V in a metal tray — then pick that option in the fitment finder above. We ship the matching bracket with your kit.

Controller Compatibility

The RXV uses a factory Danaher/Sevcon AC controller. The Fleet Lithium 51V pack is fully compatible — no reprogramming, no controller upgrade, and no wiring changes required. Aftermarket controllers should be verified separately.

Will this fit my RXV?

Yes. Each tray layout has a dedicated bracket kit, so the install is factory-fit with no drilling or vehicle modification.

Does it fit a factory ELiTE lithium RXV?

No. Vehicles that left the factory with an E-Z-GO ELiTE lithium pack use a different architecture and are not covered by this kit.

Does my controller need reprogramming?

No. The factory RXV AC controller accepts the 51V lithium pack without any changes. This is a true drop-in replacement.

How long does installation take?

30–60 minutes with basic hand tools.

Does it work in cold weather?

Yes. 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.