How to Install Golf Cart Batteries

* Some installations may require a power drill with standard/hole saw bits for metal/plastic

Step 1 - Prepare the Cart

• Position the cart on a flat surface
• Turn off the power
• Engage the parking brake
• Switch to TOW mode

Step 2 - Verify Your Battery System

Know your Voltage and Battery Type

Golf carts may be designed to operate at different voltage settings, and use different battery types (chemistries). It is important to install batteries that meet the voltage requirement of the system. The most common voltage systems in golf carts are;

• 36-Volt comprised of six 6-Volt lead batteries or a single 36-Volt lithium battery
• 48-Volt comprised of six 8-Volt lead batteries, four 12-Volt lead batteries, or a single 48-Volt lithium battery

Remove the Seat

For ease of access, it is best to remove the seat. Tip the seat forward - many carts have a hinge system that allows for the seat to be directly lifted/removed, while others may require the seat to be unbolted.

Count the Cells

If your cart utilizes lithium, it is common to have the voltage listed directly on the battery. If your cart utilizes lead batteries, a shortcut to determine the system voltage is to count the number of cells (caps) on the batteries in your cart. Lead batteries operate at 2 volts per cell. Count the number of cells or caps on one of your current batteries (3, 4, or 6). Multiply that number by 2 to determine your battery voltage. Then, multiply that by the number of batteries found in your cart to determine the voltage.

Step 3 - Remove the Existing Battery Pack

Assess the Setup

Review the entire layout of the battery system. It is recommended to take a photograph of the setup for reference. Determine the main power cables (positive and negative), along with any accessory cables/wires, and mark them with the electrical tape.

Disconnect the Old Batteries

For lithium batteries, ensure the battery is turned off before proceeding. Remove the main negative cable first, then the main positive cable. Proceed to remove the cables from the battery-to-battery connections. Remove the battery hold-down brackets and carefully remove each battery. Keep track of all items (cables, nuts, etc.) for reuse if installing a comparable type (lead or lithium) battery.

Step 4 - Install and Connect New Batteries

Prepare the Area

Clear out any dirt or debris from the battery tray using a vacuum or wipes. Clean the cable connectors with a wire brush to remove any corrosion buildup.

If Installing a Lithium Battery

A separate bracket may be required to secure the battery in the cart. Follow specific instructions for this process and for the addition of accessories, including a remote power switch, battery gauge, lithium charger, and AC Charge port.

If Installing a Lead (Flooded or AGM)

Configure the batteries in the same position as the old batteries were removed. Reattach the hold-down brackets or straps to keep the batteries firmly in place. Attach the cables to the batteries, connecting the positive terminals first, followed by the negative terminals. Use a tool (i.e., socket wrench) to tighten each nut. Do not hand-tighten: A loose nut or cross-thread will create arcing, which could damage the terminal on the battery or cause a fire.

Safety

Use the zip ties to keep any cables and wires organized and away from wear and tear. Replace any protective covers or utilize the electrical tape to minimize the potential for a short circuit.

Step 5 - Charge and Test

Confirm All Connections

Verify all connections are tightened and the batteries are in a secure position with the hold down.

Go for a Test Run

Take the cart out of TOW mode. Turn on the power and give the cart a test run in a clear space.

Step 6 - Recycle the Old Batteries

Return your old batteries to a recycling center or Batteries Plus for proper disposal and recycling. Fees may apply. Lead-acid batteries should be returned to Batteries Plus for recycling or a potential refund of the core fee (if new batteries were purchased from Batteries Plus, depending on the state).

Step 7 - Maintenance

Charging

Proper charge maintenance can improve the performance and lifespan of your batteries. Charge your golf cart battery after every use. Overcharging can also damage the battery. If you have a standard charger, be sure to monitor the process or invest in an automatic charger that prevents overcharging.

Connections

Routinely check the battery connections on your battery to ensure they are appropriately tightened. Loose connections can create unsafe conditions and limit charge and discharge performance.

Watering

For flooded lead batteries, check the electrolyte levels regularly to ensure the lead plates are covered for optimal performance (and safety). If the electrolyte levels are low, add distilled water, ensuring the liquid sits about 1/4 inch above the battery plates. Avoid overfilling, as it can lead to leaks and reduced efficiency. Tired of watering? Consider the use of a watering system or upgrade to a fully sealed AGM battery.