51 Volt Fleet Lithium 105AH w/ NexGen BMS - Bundle
51 Volt Fleet Lithium 105AH w/ NexGen BMS - Bundle Backordered — estimated to ship Sep 15
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
51 Volt Fleet Lithium 105AH w/ NexGen BMS - Bundle
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.
Quick answer: the 51 Volt Fleet Lithium 105AH w/ NexGen BMS - Bundle from Fleet Lithium has nominal voltage 51.2V, capacity 105 AH, continuous / peak discharge 300A continuous / 800A peak surge, cycle life 5,000+ cycles at 80% Depth of Discharge (DoD), cell 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
- Cell Chemistry
- Battery Type
- EV Battery Type
- BMS Features
- 300A Continuous / 800A Peak Surge Discharge , 300A Battery Management System (BMS) , Internal Heating for Cold Temp Charging , Bluetooth Communication with BT 5.0 , Active Cell Balancing for Extended Life Cycle , Built in Fire Extinguisher for Ultimate Safety
- Safety Features
- Thermal Regulation (Heated Cells) , Low Voltage Disconnect (LVD) , Low Temp Charging Cutoff , Built in Fire Extinguishers , Over Charge / Discharge Protection , Over Current Protection , Reverse Polarity Protection
- Battery Features
- EV Battery Features
- Operating Temperature
- Charging: 0°C to 45°C (32°F to 113°F) , Discharging: -20°C to 60°C (-4°F to 140°F)
Dimensions & Weight
- Dimensions (L x W x H)
- Weight
- 120.0 lb
Fitment & Compatibility
- Make
- Model
- Model Number
Warranty & Compliance
- Warranty
- Certifications
- UL 1642 , UL 1973 , CE , RoHS , UN38.3 , IP65
- Standards
- Condition
- Manufacturer Relationship
Product Details
- Classification
- Colour / Finish
- Vendor
- Fleet Lithium
- Product Type
- Battery Bundles
- SKU
- FL-GPS-NG51105
Let customers speak for us
GREAT SERVICE
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!
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.
