Advanced EV Advent 48V Lithium Battery Conversion Kit — Fleet Lithium
Features
Features
Backed by a 10 Year Warranty
Backed by a 10 Year Warranty
Advanced EV Advent 48V Lithium Battery Conversion Kit — Fleet Lithium - 51V 105Ah is backordered and will ship as soon as it is back in stock.
Purpose-Built for the Advanced EV Advent
The Advent is Advanced EV's flagship personal transportation vehicle — available in 2-passenger, 4-passenger (4L), and 6-passenger (6L) configurations. This 51.2V LiFePO4 conversion kit replaces the entire factory lead-acid bank with a single lightweight battery, delivering 3–4× the range with zero maintenance.
Choose Your Capacity
| Capacity | Energy | Range | Best For |
|---|---|---|---|
| 51V 65Ah | 3.33 kWh | Up to 27 mi | Stock carts, short trips |
| 51V 105Ah | 5.38 kWh | Up to 50 mi | Daily driving, golf courses |
| 51V 168Ah | 8.60 kWh | Up to 75 mi | All-day use, hilly terrain |
| 51V 210Ah | 10.75 kWh | Up to 90 mi | Maximum range, fleet/commercial |
65Ah is for stock motors/controllers only. If your cart has performance upgrades, choose 105Ah or higher.
Fitment Guide
| OEM | Model | Years | Factory Voltage |
|---|---|---|---|
| Advanced EV | Advent 2 | 2020–Present | 48V |
| Advanced EV | Advent 4L | 2020–Present | 48V |
| Advanced EV | Advent 6L | 2020–Present | 48V |
| Advanced EV | Advent Specialty (Beverage, Hospitality, Ambulance) | All Years | 48V |
Controller Compatibility
The Advent uses a 48V AC motor controller. The 51.2V Fleet Lithium pack is a direct replacement for the factory lead-acid bank. No controller reprogramming required.
What's Included
- 51V NexGen Fleet Lithium LiFePO4 Battery (selected capacity)
- CH5618 — 58.4V 18A LiFePO4 Smart Charger
- BR4986 — Advanced EV Bracket Kit
- AC0219 — AC Power Connector with Cover Plate
- CB0917 — 1/0 AWG Cable Set (35.4")
- Digital State-of-Charge Gauge
- All mounting hardware
Key Specs
- 300A NexGen BMS with 800A peak surge
- Patent-pending fire suppression system
- Built-in cold-weather heater — activates automatically below 32°F when charging
- Bluetooth 5.0 monitoring — voltage, temp, cycle count from your phone
- 10-year warranty — designed and assembled in the USA
What makes the Advent different from the Click or Horizon?
The Advent line (2, 4L, 6L) is Advanced EV's original platform — the most widely sold model with the largest aftermarket support. While all three share the same 48V system and bracket kit, the Advent is available in more seating configurations including specialty vehicles like beverage carts and ambulances.
Do I need to reprogram my controller?
No. Works with your factory 48V AC controller out of the box.
How long does installation take?
30–60 minutes with basic hand tools. Remove the old lead-acid batteries, drop in the Fleet Lithium pack, connect cables, and ride.
Does it work in cold weather?
Yes. The integrated heater activates automatically below 32°F when plugged in for charging — it's standard on every pack, not an add-on.
*Range estimates are maximums under ideal conditions (flat terrain, single rider, 12–15 mph, 70°F). Actual range varies with terrain, weight, speed, and temperature.
Let customers speak for us
Install went quick and easy.
The kit included everything I needed.
And my cart has more power and holds a charge for days instead of hours
This is a very high quality battery easy to install, so happy to be rid of the nasty corrosive lead cell batteries. Hopefully I’ll get many years of service out this battery and I’m sure I will, just the getting rid of the lead cell maintenance is a huge win. The cost of corroded cables, hold down brackets and adding water was a pain in the butt.
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.
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.
Real world use, not just cruising. This battery actually performs.
I love the Bluetooth monitoring features. No more voltage sag even on steep hills. It's a night and day difference from lead-acid batteries.
Installation was straightforward and the instructions were clear. No more voltage sag even on steep hills. The battery runs cooler and is much lighter than my old one.
This kit exceeded my expectations. The Ranger runs smoother, quieter, and more efficiently. Would absolutely buy again.
No more voltage sag even on steep hills. Installation was straightforward and the instructions were clear. The battery charges quickly and holds power for a long time.
The battery runs cooler and is much lighter than my old one. No more voltage sag even on steep hills. The range has doubled compared to my old setup.
