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51 Volt Fleet Lithium 105AH w/ NexGen BMS - Bundle

$2,69900 USD
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10-Year Warranty US-Based Support Ships From The USA 30-Day Guarantee Safe Chemistry

Drop-In 51V 105Ah Lithium Bundle — Longer Range, Zero Maintenance, 10-Year Warranty

Replace your entire 48V lead-acid bank with one compact battery. The Fleet Lithium 51V 105Ah Bundle delivers stronger acceleration, 25–35 miles of range, and smarter diagnostics — straight out of the box. No rewiring. No programming. No maintenance. Ever.

Why Customers Choose This Bundle

  • Eliminate range anxiety — 5.38 kWh of usable energy means full-power performance from first mile to last
  • Drop-in simplicity — replaces 48V lead-acid banks in golf carts, LSVs, and utility vehicles with no controller changes
  • Cold-weather confidence — built-in heater activates automatically below 32°F so winter doesn't mean downtime
  • Real-time diagnostics — Bluetooth 5.0 lets you check voltage, temperature, and cycle count from your phone
  • Safety you can trust — patent-pending fire suppression system stops thermal events before they start

What Lead-Acid Can't Do

Fleet Lithium 51V 105Ah Typical Lead-Acid 48V
Weight ~103 lbs 300+ lbs (6 batteries)
Range 25–35 miles 8–15 miles
Lifespan 10+ years (5,000+ cycles) 2–4 years
Maintenance Zero Monthly watering + cleaning
Voltage sag None — full power to near-empty Significant under load
Cold charging Built-in heater (standard) Not available

NexGen BMS — What Makes It Different

  • 🔥 Fire Suppression — Aerosol extinguisher activates internally in thermal events
  • ❄️ Internal Heating — Cold-weather start-ready, no blankets or tricks needed
  • ⚡ Active Cell Balancing — Ensures uniform charge and longer life across all cells
  • 📱 Bluetooth 5.0 Monitoring — View health, voltage, balance and usage in real-time
  • 🔌 CANBUS + RS485 — Direct integration with advanced controllers and chargers

What's Included

  • 51V 105Ah NexGen Fleet Lithium LiFePO4 Battery
  • CH5618 — 58.4V 18A LiFePO4 Smart Charger
  • CB0917 — Cable Set (35.4")
  • AC0219 — AC Power Connector
  • Digital State-of-Charge Gauge

Technical Specifications

Chemistry LiFePO4 (Lithium Iron Phosphate)
Nominal Voltage 51.2V
Capacity 105Ah / 5,376 Wh
BMS 300A NexGen BMS with 800A peak surge
Max Continuous Discharge 300A
Peak Discharge 600A (10 sec)
Charge Voltage 58.4V
BMS Cut-Off 800A (1 sec)
Discharge Temp -4°F to 131°F (-20°C to 55°C)
Charge Temp 32°F to 131°F (0°C to 55°C)
Cold-Weather Protection Built-in heater activates below 32°F
Weight ~103 lbs (complete bundle)
Dimensions 14.3" × 12.24" × 10.94"
Cell Type Grade A Prismatic EVE Cells
Enclosure Cold-rolled steel (IP67)
Warranty 10 years — designed and assembled in the USA

Compatible With

  • EZGO TXT, RXV
  • Club Car Precedent, DS, Tempo
  • Yamaha Drive / Drive2
  • ICON, Star EV, Advanced EV, Evolution
  • Neighborhood Electric Vehicles (NEVs) and LSVs
  • Polaris Ranger EV (48V version)
  • Any 48V lead-acid system (drop-in to 51V)

No controller reprogramming required for most factory 48V vehicles.

Which Capacity Is Right for You?

Capacity Energy Range Best For
51V 105Ah 5.38 kWh 25–35 mi Daily driving, golf, errands ✅ Most popular
51V 168Ah 8.60 kWh Up to 50 mi Heavy loads, hills, all-day use
51V 210Ah 10.75 kWh Up to 65 mi Maximum range, commercial/fleet use

Frequently Asked Questions

Does this include a charger?

Yes — the bundle includes a CH5618 58.4V 18A LiFePO4 Smart Charger, cable set, AC power connector, and SOC gauge. Everything you need for a complete installation.

Will this work without reprogramming my controller?

In most cases, yes. Factory 48V controllers are generally compatible with 51.2V lithium. If your vehicle uses a Curtis or GE controller with custom programming, verify settings against the 51.2V nominal voltage.

How long will this battery last?

LiFePO4 cells are rated for 5,000+ cycles. At typical golf cart usage, that translates to 10+ years of service life — backed by our 10-year warranty.

Does it work in cold weather?

Yes. The built-in heater activates automatically when charging below 32°F, protecting the cells. This is standard — not a paid upgrade like many competitors charge $200–$400 for.

What does the Bluetooth BMS monitor?

Real-time cell voltages, pack temperature, state of charge, cycle count, and fault codes — all from the Fleet Lithium app on your phone.

Range estimates depend on terrain, payload, speed, temperature, and driving habits.

  • 5 stars: 7 (70%)
  • 4 stars: 2 (20%)
  • 3 stars: 1 (10%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
K
Kaitlyn G.
Solid replacement for an aging battery bank — 51V 105Ah bundle

The 51V 105Ah bundle solved the voltage drop and inconsistent performance that had developed with the previous batteries. The vehicle now feels predictable from the beginning of a trip to the end.

Hi Kaitlyn, we're thrilled to hear that the bundle has improved your vehicle's performance! Thanks for sharing your experience with us. Enjoy your reliable power!

B
Beatrice C.
Works well after sorting the installation details — 51V 105Ah bundle

The 51V 105Ah bundle met expectations, though the mounting and cable layout required more planning than anticipated. Once installed, it delivered stable power and has been easy to live with.

Hi Beatrice, we're glad to hear the battery is performing well once installed! Thanks for sharing your experience, and if you need any more tips or assistance, feel free to reach out.

O
Omar P.
Better response without the battery sag — 51V 105Ah bundle

The 51V 105Ah bundle keeps the vehicle responsive when the old battery bank would have started to feel weak. The improvement is especially noticeable during acceleration and moderate climbs.

C
Christian Y.
Cleaner battery compartment with the 51V 105Ah bundle — 51V 105Ah bundle

The 51V 105Ah bundle replaced a crowded set of batteries with a much cleaner installation. The vehicle feels more responsive, and the lack of corrosion and watering is a welcome change.

B
Bailey T.
Good performance with limited documentation — 51V 105Ah bundle

The 51V 105Ah bundle has worked reliably, but more application-specific installation notes would help first-time buyers. The battery output is steady and the reduction in maintenance is noticeable.

G
Gianna U.
Strong everyday performance — 51V 105Ah bundle

The 51V 105Ah bundle has provided reliable starts, smooth acceleration, and predictable runtime in regular use. The battery information is easy to check, which makes planning a charge much simpler.

C
Carla X.
Impressive performance, slightly more setup than expected — 51V 105Ah bundle

Getting the 51V 105Ah bundle positioned and connected took longer than planned, but the battery itself has worked very well. The steady output and reduced maintenance are the biggest improvements.

D
Delilah Q.
Simple charging and predictable runtime — 51V 105Ah bundle

The 51V 105Ah bundle has made charging less of a guessing game because the remaining capacity is easier to track. Runtime has been consistent across several normal use cycles.

S
Savannah M.
A dependable lithium upgrade — 51V 105Ah bundle

The 51V 105Ah bundle feels well built and has provided consistent power for repeated trips and daily use. The vehicle accelerates more cleanly and no longer needs the old battery maintenance routine.

S
Samuel O.
The 51V 105Ah bundle is a major maintenance upgrade — 51V 105Ah bundle

Replacing the old batteries with the 51V 105Ah bundle removed a lot of weight and ongoing maintenance from the vehicle. Power delivery remains steady instead of fading noticeably as the charge drops.

M
Michael L.

I have a 1997 ClubCar DS. I want to go lithium but it has the narrow frame rails. What can you do to make this transformation possible?

Fleet L.-.H.P.L.B.

Yes—we have a kit made specifically for the narrow-frame 1996–2000 Club Car DS. For your 1997 cart, choose the old-style DS kit in 65Ah or 105Ah; the 105Ah option is the better choice if you want more range.

Let customers speak for us

from 460 reviews
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Colbyutahman
fantastic upgrade

What a fantastic upgrade from my old acid batteries. It was time and I’m so impressed. Shipping came smoothly. Customer service has been fantastic and looking forward to the adventures to come including camping, RV, fishing, boating.

BlueMax Marine 12V 105Ah LiFePO4 Battery (Group 24)
Bad Boy Recoil & Recoil iS Lithium Battery Conversion Kit (72V) | Fleet Lithium
Daniel L.
Amazing Product, Amazing Customer Service

The customer service and the battery itself from Fleet Lithium is unbeatable. One of the best experiences as a customer I have ever had. They stand by their product and help you every step of the way to ensure you are happy in your purchase. The install was easy once you know where everything is supposed to go and the battery has performed flawlessly in my Bad Boy Recoil since installation. It made it a lot lighter and the buggy is obviously quicker now and I was able to ride it around the farm for hours in fast mode the other day and only used 25% of the battery carrying a buddy and myself. It is really amazing.

Bad Boy Recoil & Recoil iS Lithium Battery Conversion Kit (72V) | Fleet Lithium
Fleet Lithium - High Performance Lithium Batteries
Kevin l.
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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Fleet Lithium 51 Volt Battery Bundle for Polaris Ranger EV (2010–2024)
Corey F.
Was a slight hick up with the darn computer bot

Was a slight hick up with the darn computer bot. Once we got thru that the service and help with my change over was top notch.
Mt Ranger performance is awesome with the Fleet battery

Fleet Lithium 51 Volt Battery Bundle for Polaris Ranger EV (2010–2024)
76.8V 105Ah Fleet Lithium Battery — NexGen BMS
Anonymous
GREAT

GREAT SERVICE

76.8V 105Ah Fleet Lithium Battery — NexGen BMS
Fleet Lithium 51 Volt Battery Bundle for Polaris Ranger EV (2010–2024)
Randy E.
Awesome kit for cold weather climate

Awesome kit. We Live in a very cold climate, our ranger gets a ton of use year round and especially during the winter so the cold weather performance was a must for us. We've had the kit installed for about a year now and it's been perfect. Customer service has been super helpful the one or two times we had questions and we've got a couple of neighbors who run the kits as well and they say the same thing. Kevin and his crew are really top notch!

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12V DC Voltage Reducer — 30A
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.

12V DC Voltage Reducer — 30A
58.4V 18A On-board LiFePO4 Charger (CH5618)
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.

58.4V 18A On-board LiFePO4 Charger (CH5618)
Fleet Lithium 51 Volt Battery Bundle for Polaris Ranger EV (2010–2024)
Claire Z.
Clean fit for the Polaris Ranger EV bundle — Polaris Ranger EV bundle

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.

Fleet Lithium 51 Volt Battery Bundle for Polaris Ranger EV (2010–2024)
58.4V 18A On-board LiFePO4 Charger (CH5618)
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.

58.4V 18A On-board LiFePO4 Charger (CH5618)
Lee L.
Easy installation and great technical support

Easy installation and great technical support.

Fleet Lithium - High Performance Lithium Batteries
Club Car Precedent / Tempo / DS (2008.5-2021) 48V Lithium Battery Conversion Kit — Fleet Lithium
Owen F.
Responsive performance after installation — Club Car 48V kit

After installing the Club Car 48V 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.

Club Car Precedent / Tempo / DS (2008.5-2021) 48V Lithium Battery Conversion Kit — Fleet Lithium
4 AWG Battery Cable Set (Pair)
Frank K.
Cabels look great

Cabels look great. Will be installing them by the end of the week. Frank

4 AWG Battery Cable Set (Pair)
BlueMax Marine 12V 195Ah LiFePO4 Deep Cycle Battery (Group 27)
Parker A.
Reliable marine power from the BlueMax 200Ah marine battery — BlueMax 200Ah marine battery

The BlueMax 200Ah marine battery has provided steady power for onboard electronics and normal time on the water. It is easier to handle than the older battery and has required very little attention between trips.

BlueMax Marine 12V 195Ah LiFePO4 Deep Cycle Battery (Group 27)
Duplicate - EZGO TXT (2010-2021) (48V) Fleet Lithium Conversion Kit
Erica X.
Straightforward upgrade with the EZGO TXT kit — EZGO TXT kit

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.

Duplicate - EZGO TXT (2010-2021) (48V) Fleet Lithium Conversion Kit

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