48V 150Ah Golf Cart Battery Complete Kit - Lithium (LiFePO4)

A Complete Lithium Conversion for 48V Carts

Replace a lead-acid bank with one 150Ah LiFePO4 golf cart battery.

This kit replaces a full bank of 8V or 12V lead-acid batteries with a single 51.2V (48V class) 150Ah LiFePO4 battery. The result is one battery instead of a bank, and no watering or acid service; routine inspections of the terminals, cables and mounting still keep it operating safely.

With 300A continuous discharge, 500A for up to 15 seconds and 1,000A for up to 2 seconds, it supports acceleration, hills and upgraded controllers and motors whose current demand fits the battery ratings. Before installing, confirm your cart is a compatible 48V platform, that the battery bay fits the 19.84 × 15.35 × 9.84 in case, and check terminal clearance, cable size, overcurrent protection and the controller's current settings.

What's in the Box

The core conversion components in one kit.

Instead of sourcing a battery, charger, extension cord, gauge, remote switch, converter, charge port and brackets separately, the kit brings the main conversion components together. The listed kit contents do not include a main fuse or DC-rated breaker: install one selected for the wire, load and system voltage, as close as practical to the battery positive terminal, and make sure the cables and lugs are sized for your installation.

Two converter wires are black: confirm the input negative and the output negative before connecting, since reversing them can damage the converter or the accessories. Turn the battery off and disconnect the charger before wiring the converter. The label does not specify fusing or connector pinout; follow the kit instructions or have a qualified installer confirm them for your cart.

Kit features

High-current LiFePO4 power with included conversion components.

Technical Specifications

Ratings at 25°C unless noted, from the BB51150A-Kit-1 spec sheet, technical data sheet and user manual (Rev V01, September 2026).

Why upgrade your golf cart to lithium?

One battery instead of a bank, and no watering or acid service.

LiFePO4 (lithium iron phosphate) is a lithium-ion chemistry valued for thermal stability and long cycle life. Its voltage stays nearly flat across most of the discharge, and the battery needs no watering or acid service, only routine inspections.

Charging and everyday use

How the included charger, gauge and on/off switch work day to day.

• ✓ Charge with the included 48V 22A onboard lithium charger: plug the included 10 ft heavy-duty extension cord into the cart's charge port and a standard 120V AC outlet. Lead-acid chargers use different profiles and will not properly charge or balance a LiFePO4 battery. Club Car carts with an On-Board Computer (OBC) may need an OBC bypass.
• ✓ Charge after each day's use, or at least once a week with occasional use, and avoid letting the state of charge fall below 20%.
• ✓ The battery charges whether its on/off switch is on or off. When it is full, the state of charge resets to 100% and the gauge reads 100%. If the charger stays connected, it restarts when the state of charge drops below about 95%.
• ✓ Disconnect the charger once the battery is full, and turn the battery off when the cart is not in use.
• ✓ There is no internal heater: the BMS blocks charging outside 0°C to 55°C (32°F to 131°F), so let a cold battery warm above freezing before charging.
• ✓ On/off: press the 6 ft remote on/off switch once to turn the battery on (the switch LED and gauge light up) and again to turn it off; disconnecting the harness also turns it off. The battery is on when either the switch on the case or the remote switch is on; to turn it off, both switches must be off.
• ✓ Automatic shutdown: with no discharge, the battery turns off after 7 days above 20% SOC, or after 24 hours at or below 20% SOC. Press the on/off switch twice to restart.
• ✓ Low-charge warning: below 20% SOC, the buzzer sounds and the gauge shows a warning. Charge as soon as possible.
• ✓ Power-down recovery: if any cell falls below 2.2V or the pack to about 38V, switch the battery on, then connect the charger immediately.
• ✓ Long-term storage: keep the state of charge between 60% and 90%, turn the battery off and store it dry at 10–35°C (50–95°F) where practical. Check the state of charge at least every 3 months and recharge as needed.

Gauge warnings and buzzer

The BMS reports alarms and protection events on the gauge, with the buzzer and in the app.

An alarm is an early warning; a protection event means the BMS has limited or stopped charging or discharging. Alarms beep 1 s on and 1 s off; protection events beep 0.2 s on and 0.2 s off. If the buzzer sounds while driving, slow down or stop and check the battery.

Low-voltage or low-charge warning: stop and charge the battery. Temperature warning: stop, let the battery return to its operating range, and check for blocked airflow or heavy sustained loads. Over-current warning: reduce the load and check the controller's current settings. Detection faults, MOSFET faults or a persistent cell-unbalance alarm: stop using the battery and contact Epoch support with the app screen and the gauge display.

Installation and safety

Verify your cart and configuration before installation.

Only authorized mechanics or technicians should install the battery. Confirm your cart is a compatible 48V platform and verify tray fitment (the 19.84 × 15.35 × 9.84 in case plus cable clearance), bracket configuration (EZGO TXT or Other), the controller's continuous and peak current settings, cable routing, OBC requirements, charge-port and accessory wiring and charger installation.

1. Turn off the cart and all accessories, disconnect the cables safely and remove the original lead-acid batteries.
2. Fasten the cart-specific bracket in the compartment as the base, and install the charger in the compartment.
3. Replace the cart's factory charging receptacle with the supplied cart-specific charge port plug; this step is required for safety.
4. Mount the digital gauge and the remote on/off switch on the dashboard, and route the 6 ft wiring harness. For stretched carts that need more reach, use the 13 ft Extended Harness for LiMAX Big Box (sold separately).
5. Set the battery in the compartment and fasten it to the bracket base.
6. Connect the battery terminals to the charger's leads and to the cart's positive and negative cables, observing polarity.
7. Install the 12V converter: connect its key-on (enable) wire to the cart's key switch and its output to the 12V accessory circuits.
8. Connect the harness to the battery communication port, on/off switch, gauge and charger; switch on and confirm the gauge shows the state of charge. If it is low, charge before first use.

• ✓ Install a main fuse or DC-rated breaker as close as practical to the battery positive terminal. The internal BMS does not replace external overcurrent protection for the wiring.
• ✓ Size loads, conductors and overcurrent protection to the 300A continuous rating; the 500A and 1,000A ratings apply for up to 15 and 2 seconds only.
• ✓ Deep-cycle battery, not cranking-rated.
• ✓ Confirm polarity and voltage with a multimeter before the final connection. Tighten the terminal hardware to the torque Epoch specifies for this battery, and keep the terminal covers installed.
• ✓ Install the battery upright, secured with the supplied brackets, and keep the vent clear; allow extra space for terminal hardware, cable bend radius and service removal. Damage from an unsecured or improperly secured battery is excluded from warranty coverage.
• ✓ Battery banks: parallel only, up to 2 matched batteries of this model of similar age, condition and firmware, at the same state of charge. Never connect in series, and never mix with lead-acid batteries or other models.
• ✓ IP67 covers dust and temporary immersion only (1 m, 30 min); it is not rated for water jets or pressure washing. Keep the communication port and harness connectors sealed, and inspect the battery after any immersion.
• ✓ Never connect the terminals together or let tools or jewelry bridge them. Stop using the battery if it is swollen, leaking, smoking, unusually hot or damaged, and follow the Safety Data Sheet (SDS) listed under Downloadable resources.
• ✓ Before first use, confirm the model on the battery label, complete the first charge and check that the app shows no active faults.
• ✓ Register the battery within 90 days, or keep your proof of purchase, to confirm your coverage start date.

Maintenance schedule

No watering or acid service; routine inspections keep it operating safely.

Keep the terminals clean and dry; do not use solvents, abrasive cleaners or pressure washing on the battery. Never place a multimeter's current (amps) input across the battery terminals: measure current with a DC clamp meter or a correctly rated shunt.

48V 150Ah Lithium Golf Cart Kit FAQs

Common questions about fitment, included components, charging, 12V accessories, range and care.