51V 168Ah Fleet Lithium Battery — NexGen BMS
Features
Features
Backed by a 10 Year Warranty
Backed by a 10 Year Warranty
51V 168Ah Fleet Lithium Battery — NexGen BMS - 168Ah is backordered and will ship as soon as it is back in stock.
51V 168Ah Fleet Lithium Battery — NexGen BMS
Drop-in 51.2V LiFePO4 replacement for tired 48V lead-acid banks — extended-range edition. 8,601Wh of fade-free energy, half the weight of lead, and zero maintenance. Monitor state of charge, voltage, and cycle count via Bluetooth. Patent-pending fire suppression and a 300A NexGen BMS keep you running through every shift, round, and run.
What This Upgrade Fixes
- Eliminates voltage sag and sluggish performance common in aging lead-acid setups
- Cures range anxiety with consistent, fade-free power down to the last drop of capacity
- Removes hundreds of pounds of dead weight, improving acceleration, handling, and braking
- Ends the hassle of terminal corrosion, acid leaks, and seasonal battery watering
What's Included
1× 51.2V 168Ah Fleet Lithium Battery. Standalone bare battery unit. A 58.4V lithium charger, custom wiring, and mounting brackets are not included — see our Bundle and Conversion Kit listings for complete drop-in packages.
Compatibility
Universal 51.2V power unit engineered as a one-for-one replacement for 48V lead-acid battery banks. Extended-range capacity is ideal for lifted carts, LSVs, UTVs, deep-cycle marine applications, and off-grid solar banks running factory 48V controllers — no reprogramming required for most vehicles.
Key Specs
- Chemistry: LiFePO4
- Nominal Voltage: 51.2V
- Capacity: 168Ah (8,601 Wh / 8.60 kWh)
- Cell Configuration: 16S1P
- Working Voltage: 43.2V – 58.4V
- Charging Voltage: 58.4V
- BMS Voltage Cutoff: 43.2V
- Recommended Low Voltage Disconnect: 49.0V
- 300A NexGen BMS with 800A peak surge
- Cycle Life: Up to 6,000 cycles at 80% DoD
- Weight: ~154 lbs (70 kg)
- Dimensions: 19.45" × 12.60" × 11.22"
- Enclosure: Cold rolled steel, IP65
- Operating Temp (Discharge): -20°C to 55°C (-4°F to 131°F)
- Operating Temp (Charge): 0°C to 55°C (32°F to 131°F) — heater activates below 32°F
- Communication: Bluetooth, GPS, RS485, UART, CAN
Frequently Asked Questions
Does this battery include a charger?
No — this listing is the bare battery only. You'll need a matched 58.4V LiFePO4 charger to run it.
- Best value: Grab the 51V 168Ah Fleet Lithium Bundle — battery + 58.4V smart charger + cable set + AC connector + state-of-charge gauge. Everything for a complete drop-in.
- Charger only: Add the CH5618 58.4V 18A Smart Charger alongside this battery.
Will this work in severe cold climates?
Yes. The NexGen BMS automatically activates internal heating below 32°F so the pack charges safely year-round.
How long will this battery actually last?
Engineered for over a decade of reliable performance and backed by our 10-year warranty. LiFePO4 cells are rated for 3,000–6,000 cycles — at typical golf cart usage that translates to 10+ years of service life.
Will this work without reprogramming my controller?
In most cases, yes. Factory 48V controllers are generally compatible with the 51.2V output without modification.
Can I integrate this with a sophisticated motor controller?
Yes. The integrated BMS provides CANBUS and RS485 ports for advanced motor controllers and telemetry systems.
Is there a vehicle-specific kit with brackets?
Yes. If you're converting a specific golf cart (EZGO, Club Car, Yamaha, Advanced EV, etc.), our 48V Conversion Kits include this exact battery plus a model-specific bracket, charger, and all wiring — no fabrication required.
Let customers speak for us
Nice and easy install, they work great, much longer range and way better power. Best of all, NO MAINTENANCE
Tried cheaper lithium setups first and they couldn’t handle the amp draw. This one has been solid with no issues.
Absolutely Incredible Range. We replaced our 4 year old Trojan batteries this spring with the 210 AH dual battery kit and we are blown away! We use the buggy to secure the perimeter of a 300 acre lot in South Carolina. We typically put about 200 miles per week on this unit. We have been testing this kit for about a month now and we are getting every bit of 80 miles per charge. Its absolutely unbelievable. Thank you Fleet Lithium!
This screen was so easy to install. We installed our fleet lithium battery about 2 years ago, the screen just came out in April, it took 10 minutes to install and everything works perfectly. Thank you Fleet lithium!
After a few months of use I can confidently say this was worth it. No maintenance, great range, and consistent power every time. Huge upgrade from stock.
I should have just bought this first instead of wasting money on others.
I use my Prowler every day hauling feed and equipment. Other batteries kept shutting down under load. This is the only one that worked right. Glad I spent the money.
Runs strong every time. Exactly what I needed.
The range has doubled compared to my old setup. Installation was straightforward and the instructions were clear. I can now play multiple rounds without recharging.
Tried cheaper lithium setups first and they couldn’t handle the amp draw. This one has been solid with no issues.
Runs strong every time. Exactly what I needed.
No more issues with power cutting out. That alone made it worth it.
No more issues with power cutting out. That alone made it worth it.
Runs strong every time. Exactly what I needed.
Handles hills and heavy loads without hesitation. Very impressed so far.
