Upgrade Your E-Z-GO Express S6 to Fleet LithiumSix passengers on 72V is the hardest job in the Express line, and the factory six 12V lead pack is the weak link — about 400 lb that fades exactly when you are fully loaded on a grade. The 76.8V Fleet Lithium pack holds voltage flat under that load, cuts roughly 250 lb, and carries a ten-year warranty.Choose Your Capacity Capacity Range* Best For 76.8V 105Ah Up to 50 mi Daily driving 76.8V 168Ah Up to 75 mi All-day use What's Included 76.8V NexGen Fleet Lithium LiFePO4 Battery (selected capacity) CH8713 — 87.6V 13A LiFePO4 Smart Charger BR4480 — Bracket Kit - E-Z-GO Express S4 / S6 AC0219 — AC Power Connector Cable Set 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 and cycle count from your phone 10-year warranty — designed and assembled in the USA Fitment Guide OEM Model Years Factory Battery Tray Bracket Shipped E-Z-GO Express S6 2018–2022 6x 12V BR4480 Which Do You Have?A 2018 Express S6 could be built as either 48V or 72V. Count your batteries — six 12V is the 72V cart this kit fits.Will It Work With My Controller?The 350A 72V AC drive runs the 76.8V Fleet pack without modification.Frequently Asked QuestionsWill this fit my Express S6?Yes, for the 72V six 12V build, using the same BR4480 bracket as the rest of the S-series.Mine is a 2018 — how do I tell 48V from 72V?Count the batteries. Six 12V is 72V; eight 6V is 48V.Does it fit a factory ELiTE lithium S6?No.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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