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EZGO TXT / RXV (2010-2021) 48V Lithium Battery Conversion Kit — Fleet Lithium

$2,51943 USD
Shipping calculated at checkout.
10-Year Warranty US-Based Support Ships From The USA 30-Day Guarantee Safe Chemistry

Upgrade Your EZGO TXT / RXV to Fleet Lithium

Replace the factory lead-acid batteries in your EZGO TXT / RXV with a single, high-performance 51V LiFePO4 pack from Fleet Lithium. Complete conversion kit — battery, charger, bracket, cables, and all hardware included.

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 cart 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
  • BR4402 — EZGO TXT / RXV Bracket Kit
  • 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 Voltage
EZGO TXT 2010–2021 48V
EZGO RXV 2008–2021 48V

Controller Compatibility

These models use a factory Curtis or GE 48V controller. The Fleet Lithium 51V pack is fully compatible — no reprogramming, no controller upgrade, and no wiring changes required. The slightly higher resting voltage of the lithium pack is within the operating range of the stock controller.

Will this fit my EZGO TXT / RXV?

Yes. The BR4402 bracket kit provides a factory-fit installation for both TXT and RXV models. No drilling or modifications required.

Does my controller need reprogramming?

No. The factory Curtis/GE 48V 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.

  • 5 stars: 8 (73%)
  • 4 stars: 3 (27%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
A
Anonymous (United States)
51V 168Ah
Install went quick and easy

Install went quick and easy.
The kit included everything I needed.
And my cart has more power and holds a charge for days instead of hours

Hi there! We're thrilled to hear the installation was smooth and you're enjoying the increased power and longer charge. Thanks for sharing your experience!

A
Amir E.
Worth the extra installation time — EZGO TXT/RXV kit

Routing and checking the connections on the EZGO TXT/RXV kit took longer than expected, but the parts fit correctly. The improved power delivery and reduced maintenance made the extra effort worthwhile.

G
Grayson I.
Well-matched components in the EZGO TXT/RXV kit — EZGO TXT/RXV kit

The battery, mounting pieces, cables, and charging equipment in the EZGO TXT/RXV kit worked together as expected. Nothing felt improvised, and the completed conversion has a factory-style appearance.

K
Karen K.
A noticeable improvement in everyday use — EZGO TXT/RXV kit

The EZGO TXT/RXV kit made the vehicle feel lighter and more consistent during ordinary neighborhood and property use. Charging and checking the remaining battery level are both easier than before.

N
Nova V.
Straightforward upgrade with the EZGO TXT/RXV kit — EZGO TXT/RXV kit

The parts for the EZGO TXT/RXV kit were organized clearly and the installation sequence made sense. The finished setup looks tidy and removes the routine upkeep of the old battery bank.

A
Ashley W.
The EZGO TXT/RXV kit made the conversion manageable — EZGO TXT/RXV kit

Using the EZGO TXT/RXV kit was simpler than sourcing a battery, bracket, charger, and cables separately. The final installation is secure and the vehicle now has predictable power throughout the charge.

M
Mason O.
Noticeably steadier power from the EZGO TXT/RXV kit — EZGO TXT/RXV kit

The EZGO TXT/RXV kit delivers more consistent power than the previous setup, especially when accelerating or climbing. Monitoring the battery status is also much more convenient now.

L
Lauren Q.
Good conversion with minor routing work — EZGO TXT/RXV kit

The EZGO TXT/RXV kit fit the application, though finding the neatest path for the cables required some patience. The result is secure, clean, and performs well once everything is tightened and checked.

E
Eliana K.
Complete and thoughtfully matched kit — EZGO TXT/RXV kit

The components in the EZGO TXT/RXV kit appear selected for the application rather than assembled as a generic package. Fitment was sensible, and the finished system has worked without unexpected issues.

G
Grayson P.
Responsive performance after installation — EZGO TXT/RXV kit

After installing the EZGO TXT/RXV kit, throttle response felt more immediate and the vehicle no longer felt sluggish late in the charge. The cleaner battery compartment is another welcome improvement.

K
Kayla J.
Good instructions and a secure result — EZGO TXT/RXV kit

The EZGO TXT/RXV kit took some careful reading, but the layout and supplied parts made the project manageable. Everything is secure now, and the performance has been reliable in routine driving.

Let customers speak for us

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fantastic upgrade

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We're loving this!

Cannot thank these guys enough. Our Hunting buggy is a whole new animal of its own! The team did a great job answering questions, shipping took 3 days and i was even able to reach the support team at 4pm on a Saturday during install. Cannot thank them enough! Don't think twice, Fleet is the way to go for your lithium job.

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Carter A.
Solved inconsistent accessory voltage — 12V voltage reducer

The 12V voltage reducer corrected the unstable behavior that had affected the lights and other accessories. The output has remained steady through regular use.

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Samantha S.
A practical spare or replacement — 51V replacement charger

The 51V replacement charger is easy to keep available as a backup and works without unnecessary controls. The battery reaches a complete charge consistently during normal use.

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Claire Z.
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The Polaris Ranger EV bundle lined up well with the intended mounting area and the connections were easy to identify. Once installed, the vehicle felt smoother and more consistent through normal use.

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Cooper X.
Dependable charging from the 51V replacement charger — 51V replacement charger

The 51V replacement charger connected as expected and has charged the compatible battery consistently. The status indicators are easy to follow, and the unit feels solid in regular use.

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Lee L.
Easy installation and great technical support

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Erica X.
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The parts for the EZGO TXT kit were organized clearly and the installation sequence made sense. The finished setup looks tidy and removes the routine upkeep of the old battery bank.

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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.

Find My Battery Talk to Our Team

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.

Find the Right Battery Contact Fleet Lithium