Upgrade Your E-Z-GO Express S6 to Fleet LithiumReplace the eight 6V lead-acid batteries in your 48V E-Z-GO Express S6 with a single 51V LiFePO4 pack from Fleet Lithium. Complete conversion kit — battery, charger, BR4480 bracket kit, cables and hardware included. Half the weight, twice the range, and no watering, ever. Choose Your Capacity Capacity Range Best For 51V 65Ah Up to 27 mi Stock carts only 51V 105Ah Up to 50 mi Daily driving, shuttling 51V 168Ah Up to 75 mi All-day use, six passengers 51V 210Ah Up to 90 mi Max range, fleet use 65Ah is for stock motors and controllers only. A loaded six-passenger S6 should start at 105Ah, and 168Ah or higher is the right call for resorts and shuttle routes. What's Included 51V NexGen Fleet Lithium LiFePO4 Battery (selected capacity) CH5618 — 58.4V 18A LiFePO4 Smart Charger BR4480 — Bracket Kit for E-Z-GO Express S4 / S6 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 (standard, not an add-on) Bluetooth monitoring — voltage, temp, cycle count from your phone 10-year warranty — designed and assembled in the USA Fitment Guide OEM Model Years Factory Pack Bracket Shipped E-Z-GO Express S6 2012–2018 48V, eight 6V lead-acid BR4480 E-Z-GO introduced a 72V AC Express powertrain in 2018 and a factory ELiTE lithium version after that. If your S6 is a 2018 model, open the seat and confirm you have eight 6V lead-acid batteries on a 48V system before ordering — a 72V or factory-lithium S6 is not covered by this kit. Controller Compatibility The 48V Express S6 uses an E-Z-GO / Curtis 400A PDS/SepEx DC controller. The Fleet Lithium 51V pack is a direct match — no reprogramming, no controller upgrade, and no wiring changes. Aftermarket controllers should be verified separately. Will this fit my Express S6? Yes, on any 48V eight-6V Express S6 from 2012 through 2018. The BR4480 bracket kit mounts to the factory tray, so no drilling or vehicle modification is expected. Does it fit a 72V Express S6? No. The 2018-and-later 72V AC powertrain and the factory ELiTE lithium models use a different architecture and are not covered by this kit. How long does installation take? 30–60 minutes with basic hand tools. Does it work in cold weather? Yes. The built-in heater activates automatically below 32°F — standard on every pack. *Range estimates are maximums under ideal conditions (flat terrain, single rider, 12–15 mph, 70°F). Actual range varies with terrain, weight, speed, and temperature.
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