Upgrade Your MadJax Ascent to Fleet LithiumReplace the factory lead-acid batteries in your MadJax Ascent with a single, high-performance 51V LiFePO4 pack from Fleet Lithium. Complete conversion kit included.Choose Your Capacity Capacity Range Best For 51V 65Ah Up to 27 mi Stock carts only 51V 105Ah Up to 50 mi Daily driving 51V 168Ah Up to 75 mi All-day use 51V 210Ah Up to 90 mi Max range 65Ah is for stock motors/controllers only.What's Included 51V NexGen Fleet Lithium LiFePO4 Battery (selected capacity) CH5618 — 58.4V 18A LiFePO4 Smart Charger BR5216 — MadJax Ascent Bracket Kit AC0219 — AC Power Connector CB0917 — 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 Bluetooth monitoring 10-year warranty — designed and assembled in the USA Fitment Guide OEM Model Years Factory Voltage MadJax Ascent All Years 48V Controller CompatibilityMadJax Ascent models use a 48V controller. The Fleet Lithium 51V pack is compatible. Verify your controller model before ordering.Will this fit my MadJax Ascent?Yes. The BR5216 bracket kit provides a factory-fit installation.Does my controller need reprogramming?In most cases, no.Does it work in cold weather?Yes. Built-in heater activates automatically below 32°F.*Range estimates are maximums under ideal conditions.
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