38V 105Ah Fleet Lithium Battery — NexGen BMS
Features
Features
Backed by a 10 Year Warranty
Backed by a 10 Year Warranty
38V 105Ah Fleet Lithium Battery — NexGen BMS is backordered and will ship as soon as it is back in stock.
38V 105Ah Fleet Lithium Battery — NexGen BMS
Drop-in 38.4V LiFePO4 replacement for tired 36V lead-acid banks. 4,032Wh 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 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× 38.4V 105Ah Fleet Lithium Battery. Standalone bare battery unit. A 43.8V lithium charger, custom wiring, and mounting brackets are not included — see our Bundle and Conversion Kit listings for complete drop-in packages.
Compatibility
Universal 38.4V power unit engineered as a one-for-one replacement for 36V lead-acid battery banks. Drops directly into 36V golf carts, marine trolling motors, off-grid solar storage, and RV power systems running factory 36V controllers — no reprogramming required for most vehicles.
Key Specs
- Chemistry: LiFePO4 (Lithium Iron Phosphate)
- Nominal Voltage: 38.4V
- Capacity: 105Ah (4,032Wh / 4.03 kWh)
- Cell Configuration: 12S1P
- Charging Voltage: 43.8V
- NexGen BMS with active and passive cell balancing
- Cycle Life: 3,500 cycles at 80% DoD (capacity retention ≥ 80%)
- Weight: ~66 lbs (29.9 kg)
- Dimensions: 13.82" × 10.11" × 10.91" (351 × 256.8 × 277 mm)
- 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
- IP67 waterproof rated
- Bluetooth monitoring — voltage, temp, cycle count
Frequently Asked Questions
Does this battery include a charger?
No — this listing is the bare battery only. You'll need a matched 43.8V LiFePO4 charger to run it.
- Best value: Grab the 36V Fleet Lithium Bundle — battery + 43.8V smart charger + cables + state-of-charge gauge. Everything for a complete drop-in.
- Charger only: Add the 36V Fleet Lithium 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. Rated for 3,500 cycles at 80% depth of discharge with ≥80% capacity retention.
What can I run this on?
Marine trolling motors (36V systems), 36V golf carts and electric vehicles, off-grid solar storage banks, and RV house power / backup systems.
What certifications does it carry?
UL 1642, UL 1973, CE, RoHS, UN 38.3.
Is there a vehicle-specific kit with brackets?
Yes. If you're converting a specific 36V golf cart, our 36V Conversion Kits include this exact battery plus a model-specific bracket, charger, and all wiring — no fabrication required.
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.
