Upgrade Your E-Z-GO Express L4 to Fleet LithiumThe Express L4 is a work cart, and work carts are hard on lead. Six 8V batteries mean weekly watering, corroded terminals, and a pack that is noticeably tired by year three. A single 51V Fleet Lithium pack removes about 230 lb, ends the maintenance entirely, and is warrantied for ten years.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, fleet use 65Ah is for stock motors and controllers only. If your cart is lifted, loaded, or running an upgraded motor or controller, start at 105Ah.What's Included 51V NexGen Fleet Lithium LiFePO4 Battery (selected capacity) CH5618 — 58.4V 18A LiFePO4 Smart Charger Vehicle-specific mounting bracket kit — matched to your cart's factory battery tray 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 L4 2012–2014 6x 8V Matched to your tray Which Do You Have?This kit is for the early electric 48V L4 with six 8V batteries. Gas L4 models are not covered.Will It Work With My Controller?The L4 uses a Curtis 1206HB-family 48V SepEx controller. That controller runs the 51V lithium pack without modification — the cart drives normally, with more punch when loaded.Frequently Asked QuestionsWill this fit my Express L4?Yes, for the electric 48V six 8V build.Does it work with a lifted or loaded cart?Yes. Choose 105Ah or higher — skip the 65Ah pack if the cart is lifted or carries a bed load.Is there any drilling?The kit mounts with the supplied bracket in the factory battery compartment.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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