Direct Drop-In 72V Lithium Upgrade for Navitas Chassis Frames Replace your heavy lead-acid batteries with a single Fleet Lithium 76.8V LiFePO4 battery pack. Designed specifically for Navitas chassis builds, this complete conversion kit includes everything needed for a seamless upgrade — battery, charger, mounting bracket, and cables. Fitment Guide OEM Model Year Range Factory Voltage Navitas All Chassis Models All Years 72V (6× 12V) Controller Compatibility Navitas controllers are designed for lithium compatibility. No programming required in most configurations. Verify your specific controller model supports 76.8V nominal input. What's Included ✅ Fleet Lithium 76.8V LiFePO4 Battery Pack with 300A NexGen BMS (800A peak surge) ✅ Integrated Bluetooth monitoring and cold-weather heating system ✅ 72V lithium-compatible charger ✅ Vehicle-specific mounting bracket kit (BR5141) ✅ Pre-terminated cable harness with corrosion-resistant terminals Key Specifications Chemistry: LiFePO4 (Lithium Iron Phosphate) Nominal Voltage: 76.8V Cycle Life: 5,000+ cycles at 80% DoD Certifications: UL 1642, UL 1973, CE, RoHS, UN38.3, IP67 Warranty: 10-Year Limited Warranty Frequently Asked Questions Which capacity is right for me? 105Ah (8.06 kWh) — Best all-around option for daily driving. Provides up to 50 miles of range per charge and fits most standard configurations. 168Ah (12.90 kWh) — Maximum range for extended use. Delivers up to 80 miles per charge, ideal for large properties, commercial fleets, or all-day driving. Will this void my warranty? Installing a Fleet Lithium battery does not void your vehicle's warranty. The battery itself is covered by a 10-year limited warranty. How long does installation take? Most installations are completed in 30–60 minutes with basic hand tools. No wiring modifications are required.
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