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51V 168Ah Fleet Lithium Battery Bundle — NexGen BMS

$3,69900 USD
Shipping calculated at checkout.
10-Year Warranty US-Based Support Ships From The USA 30-Day Guarantee Safe Chemistry

51V 168Ah Fleet Lithium Battery Bundle — NexGen BMS

Complete 51.2V 168Ah LiFePO4 battery bundle with 300A NexGen BMS. Everything you need for golf carts, LSVs, UTVs, marine, and off-grid applications. Stores 8,601Wh of energy — up to 75 miles of range in a 48V golf cart.

What's Included
  • 51V 168Ah Fleet Lithium LiFePO4 Battery with NexGen BMS
  • 58V Lithium Battery Charger
  • Bluetooth Module — real-time monitoring via smartphone
  • DC Voltage Reducer
  • Round State-of-Charge Meter
  • Universal Charge Receptacle
Key Specs
  • Chemistry: LiFePO4
  • Nominal Voltage: 51.2V
  • Capacity: 168Ah (8,601Wh)
  • 300A NexGen BMS with 800A peak surge
  • Cycle Life: 5,000+ cycles at 80% DoD
  • Weight: 136 lbs
  • Dimensions: 22" × 12" × 10.6"
  • Built-in cold-weather heater — activates automatically below 32°F
  • Patent-pending fire suppression system
  • Bluetooth monitoring — voltage, temp, cycle count
  • IP67 waterproof rated
Safety & BMS

Active cell balancing, overcharge/over-discharge/short circuit/overcurrent/thermal/reverse polarity protection, low voltage disconnect, and real-time app monitoring.

FAQ

What vehicles does this fit? Universal bundle — no vehicle-specific bracket included. Works with any 48V system. For a vehicle-specific kit with bracket, see our Conversion Kit listings.

Does it include a charger? Yes. A 58V lithium charger is included.

Does it work in cold weather? Yes. Built-in heater activates automatically below 32°F — standard on every pack.

10-year warranty. Designed and assembled in the USA.

  • 5 stars: 7 (64%)
  • 4 stars: 3 (27%)
  • 3 stars: 1 (9%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
R
Randall (United States)
Night and day difference.

We love our new battery, we are consistently seeing over 50 miles and range, no more mess and no more acid to deal with, and the cart has so much more pickup and speed now. Well worth the money, premium quality, top notch service! Thank you for making a great product!

Randall review photo
I
Ian L.
Works well after sorting the installation details — 51V 168Ah bundle

The 51V 168Ah 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 Ian, thank you for your feedback! We're glad to hear the bundle is performing well after the installation adjustments. If you need any further assistance or tips, feel free to reach out. Enjoy your reliable power!

L
Landon R.
A dependable lithium upgrade — 51V 168Ah bundle

The 51V 168Ah 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.

M
Miles I.
Good performance with limited documentation — 51V 168Ah bundle

The 51V 168Ah 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.

H
Hunter W.
Simple charging and predictable runtime — 51V 168Ah bundle

The 51V 168Ah 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
Sofia B.
Consistent power from the 51V 168Ah bundle — 51V 168Ah bundle

The 51V 168Ah bundle holds power more evenly than the previous battery bank and feels stronger under normal load. Checking battery status is simple, and there is no routine watering or terminal cleanup.

E
Ethan G.
Good battery with a careful first setup — 51V 168Ah bundle

The 51V 168Ah bundle performed well after the initial wiring and charging checks were completed. The setup took some attention, but everyday operation has been simple and dependable.

L
Leonardo T.
Useful monitoring and steady output — 51V 168Ah bundle

The 51V 168Ah bundle makes it easy to check the remaining charge without guessing from vehicle performance. Power remains smooth, and charging has fit easily into the normal routine.

A
Alexa Y.
Impressive performance, slightly more setup than expected — 51V 168Ah bundle

Getting the 51V 168Ah 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.

C
Cooper G.
Strong everyday performance — 51V 168Ah bundle

The 51V 168Ah 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.

V
Victoria S.
Reliable power through the charge — 51V 168Ah bundle

The 51V 168Ah bundle does not show the same late-charge sluggishness as the old lead-acid setup. It has been consistent on hills and during repeated stops and starts.

C
Customer

Hi, I am looking to find out the lead time on getting a 51 Volt 160Ah Fleet Lithium Battery for a Polaris ranger EV.
What will the shipping cost be to Luling, LA 70070?

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

The current Ranger size is 51V 168Ah, and it is presently shown as backordered. Shipping to Luling, LA 70070 is calculated at checkout, but contact us and we’ll confirm the latest lead time and shipping cost before you order.

Let customers speak for us

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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.

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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.

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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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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

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GREAT

GREAT SERVICE

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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)
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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.

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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.

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Lee L.
Easy installation and great technical support

Easy installation and great technical support.

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Frank K.
Cabels look great

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

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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.

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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