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: 5,000+ 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 5,000+ 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.
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