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Model Years Factory Voltage Compatible Bad Boy Ambush All Years 72V Yes Bad Boy XT All Years 72V Yes All kits use the same BR5204-72 bracket and are fully compatible with the factory 72V controller
Model Years Factory Voltage Controller Reprogramming EZGO TXT (Lead-Acid) 2010–2021 48V (6 × 8V) No — drop-in compatible EZGO RXV (Lead-Acid) 2008–2021 48V (6 × 8V) No — drop-in compatible NexGen BMS Technology
Replace the factory lead-acid batteries in your MadJax Ascent with a single
Best value: Grab the 51V 168Ah Fleet Lithium Bundle — battery + 58
The display communicates with the Curtis controller via CAN bus and reads voltage/SOC data regardless of battery chemistry
76.8V 105Ah Fleet Lithium Battery — NexGen BMS MadJax Model Years Factory Voltage Compatible76. 8V 105Ah Fleet Lithium Battery NexGen BMS Achieve maximum range and constant torque with zero maintenance. 8,064Wh of usable energy for 72V 76. 8V vehicles, marine, and off grid systems. Monitor state of charge, voltage, and cycle count via Bluetooth 5. 0. Integrated fire suppression and advanced NexGen BMS. What This Upgrade Fixes Eliminates voltage sag and sluggish performance common in aging lead acid setups Cures range anxiety with consistent,
US$ 125.00
US$ 105.02
US$ 64.00