51V 65Ah Fleet Lithium Battery — NexGen BMS (Bundle)
51V 65Ah Fleet Lithium Battery — NexGen BMS (Bundle) Backordered — estimated to ship Sep 1
10-Year Warranty / 5,000+ Cycles
10-Year Warranty / 5,000+ Cycles
Built for the long haul. Every Promise-series battery is backed by a 10-year manufacturer's warranty and rated for 5,000+ cycles at 80% depth of discharge. View full warranty details.
Product Highlights
Product Highlights
51V 65Ah Fleet Lithium Battery — NexGen BMS
Standalone 51.2V 65Ah LiFePO4 battery with NexGen BMS. Battery only — no charger or accessories included. Ideal entry-level option for stock (non-lifted) golf carts, custom builds, or replacements in an existing Fleet Lithium system. Stores 3,328Wh of energy.
Key Specs
- Chemistry: LiFePO4
- Nominal Voltage: 51.2V
- Capacity: 65Ah (3,328Wh)
- 300A NexGen BMS with 800A peak surge
- Cycle Life: 5,000+ cycles at 80% DoD
- Weight: ~78 lbs
- Built-in cold-weather heater — activates automatically below 32°F
- Patent-pending fire suppression system
- Bluetooth monitoring — voltage, temp, cycle count
Safety & BMS
Active cell balancing, overcharge/over-discharge/short circuit/overcurrent/thermal/reverse polarity protection, low voltage disconnect, and real-time app monitoring.
FAQ
Does this include a charger? No. This is the battery only. Purchase a 58.4V lithium charger separately or see our Bundle listings for a complete kit.
Will this fit a lifted cart? The 65Ah tier is recommended for stock (non-lifted) golf carts. For lifted carts or longer range, step up to the 105Ah or 168Ah.
Can I use this as a replacement in my existing Fleet Lithium system? Yes. Drop-in compatible with any Fleet Lithium 48V/51V setup.
Does it work in cold weather? Yes. Built-in heater activates automatically below 32°F.
10-year warranty. Designed and assembled in the USA.
Quick answer: the 51V 65Ah Fleet Lithium Battery — NexGen BMS (Bundle) from Fleet Lithium has nominal voltage 51.2V, capacity 65 AH, continuous / peak discharge 300A continuous / 800A peak surge, cycle life 5,000+ cycles at 80% Depth of Discharge (DoD), chemistry Lithium Iron Phosphate (LiFePO4), warranty 10 Year Warranty. The complete specification table for this configuration is below.
Electrical & Performance
- Nominal Voltage
- Capacity
- Nominal Energy
- Continuous / Peak Discharge
- Charging Voltage
- Charging Current
- Discharge Cutoff Voltage
- Cycle Life
Battery & BMS
- Chemistry
- Battery Technology
- Battery Type
- EV Battery Type
- BMS Features
- Over Charge / Over Current / Protection , 300A Continuous / 800A Peak Surge Discharge , Patent-Pending Fire Suppression System , Real-time status monitoring (via app or display) , Active Cell Balancing for Extended Life Cycle , Bluetooth Communication with BT 5.0 , Over / Under Temperature Protection
- Safety Features
- Thermal Regulation (Heated Cells) , Built in Fire Extinguishers , Jump Start on Low Voltage , Low Voltage Disconnect (LVD) , Over Charge / Discharge Protection , Reverse Polarity Protection , Over Current Protection
- Battery Features
- EV Battery Features
- Operating Temperature
- Charging: 32 to 140 ºF (0 to 60 ºC) , Discharging: -4 to 149 ºF (-20 to 65 ºC) , Storage: 50 to 113 ºF (10 to 45 ºC)
Fitment & Compatibility
- Make
- Model
- Model Number
Warranty & Compliance
- Warranty
- Certifications
- UL 1642 , UL 1973 , CE , RoHS , UN38.8 , IP65
- Standards
- Condition
- Manufacturer Relationship
Product Details
- Classification
- Colour / Finish
- Vendor
- Fleet Lithium
- Product Type
- Individual Batteries
- SKU
- FLSGPS-5165-GPS
- Shipping Weight
- 38.0 lb
Let customers speak for us
The 12V voltage reducer corrected the unstable behavior that had affected the lights and other accessories. The output has remained steady through regular use.
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.
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.
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.
Easy installation and great technical support.
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.
Cabels look great. Will be installing them by the end of the week. Frank
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.
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.
The 76V replacement charger replaced the previous unit without requiring a complicated setup. Charging has been predictable, and the connector fits securely.
The plug on the 51V replacement charger seats firmly and the unit maintains a normal charging cycle. The battery has been ready for use each time charging is complete.
The parts for the EZGO 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.
The 12V voltage reducer provided a clear path for running standard accessories from the higher-voltage battery system. The result has been reliable and easy to service.
The BlueMax 105Ah marine battery eliminated routine water checks and corrosion cleanup while providing smoother power. The battery compartment is cleaner and easier to inspect now.
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.
