How Long Does 100ah Battery Last in A Golf Cart?

When you’re trying to figure out how long a 100Ah battery will last in a golf cart, there are several things to consider, such as the battery’s voltage, the motor’s efficiency, the weight of the cart, and the conditions in which it’s used. For this article, we’ll focus on a common setup: a 72V 100Ah lithium battery, and give an estimate based on that.

Theoretical Range of a 72V 100Ah Battery

A 72V 100Ah lithium battery is frequently found in electric vehicles, including golf carts, and can theoretically take you about 60 to 70 miles (95 to 110 kilometers) on a full charge under normal conditions. This estimate assumes a typical weight and terrain for the vehicle. But, it’s important to note that actual performance can vary based on several factors.

Factors Influencing Battery Life and Range

Motor Power and Efficiency

The motor’s power plays a significant role in how far the cart can travel on a fully charged battery. In a golf cart with a 72V 100Ah battery, you’ll typically find motors that range from 1000W to 1500W, which impacts the overall range of the vehicle.

Energy Consumption

Let’s break it down based on different motor sizes:

• 1000W Motor:
  A 1000W motor will usually push the cart to an average speed of about 45 km/h. With this setup, the battery draws around 13.9A. This means the battery could last about 7.2 hours (100Ah ÷ 13.9A). Theoretically, that gives you a range of around 325 kilometers (7.2 hours × 45 km/h).

• 1200W Motor:
  With a 1200W motor, your average speed bumps up to around 50 km/h, and the current consumption rises to about 16.7A. This means the battery life would be closer to 6 hours (100Ah ÷ 16.7A). So, your range would be about 300 kilometers (6 hours × 50 km/h).

• 1500W Motor:
  A more powerful 1500W motor can push the cart to an average speed of 55 km/h, but the current drawn increases to about 20.8A. That means the battery would last about 4.8 hours (100Ah ÷ 20.8A), resulting in a theoretical range of about 265 kilometers (4.8 hours × 55 km/h).

Real-World Considerations

While these numbers provide a solid estimate, keep in mind that actual performance can vary. Factors like terrain, driving style, and how much weight the cart is carrying can all affect the range. For example, if you’re driving on hilly terrain or carrying heavy loads, the battery will drain faster. Even things like tire condition and using accessories, such as lights or air conditioning, can impact how much power you use.

Is a 72V 100Ah Battery Always Necessary?

While the 72V 100Ah battery offers a longer range and faster speeds, it might not always be the best fit for everyone. Its larger size and higher cost could be a consideration for some users. Plus, if you only use your golf cart for short trips, you might not need the extended range this battery provides. Also, keep in mind that the battery’s larger size might not fit into all golf cart battery compartments.

Conclusion

In conclusion, a 72V 100Ah lithium battery in a golf cart can give you a range anywhere from 265 to 325 kilometers, depending on the motor size and other conditions. However, it’s important to think about your specific needs before making an investment in such a large battery. With regular maintenance and careful charging, you can make sure your battery serves you well for years.