Electric Car Charging on the Road: Can You Use a Mobile Home Inverter or Generator While Towing?

For many electric vehicle (EV) enthusiasts, the idea of charging their vehicle while towing it may seem appealing, particularly with a setup like a mobile home inverter or generator. However, the logistics and practicality of such a scenario can be complex. This article explores whether it is feasible to charge an electric car while towing it on a trailer and evaluates the pros and cons of flat-towing.

Flat-Towing for Charging Purposes

Flat-towing an electric car for short distances at a low speed is possible, as it can charge through regenerative braking much like descending a hill. This method relies on the proper setup, including the vehicle being turned on, in drive, with regenerative braking enabled, and all four wheels on the road.

Practical Considerations

Driver Involvement: The driver must be able to engage in regenerative braking, which requires constant attention and anticipation. This is because the car is not only being towed but also engaging in braking through the tires. Safety: The primary concern is safety. Being towed at a low speed with a tow rope can be intimidating and requires constant vigilance. Drivers must anticipate the actions of the tow vehicle, such as when they brake at stop signs or traffic lights. Coordination with the tow vehicle using a phone or two-way radio is highly recommended. Vehicle Preparation: Ensure the necessary tether points are available on the car, such as a tow bolt. Modern cars are not intended to be towed by the bumper alone, and a rope around the suspension can damage the bumper or suspension. My Leaf, for instance, has an insert for a bolt under a small flap but may require a specialized bolt that is not readily available at auto parts stores.

Limitations and Risks

While innovative, flat-towing to charge an electric car has several limitations, and these are not recommended by the manufacturer. There are significant risks and inefficiencies involved.

Regenerative Braking and Charging Efficiency

The regenerative braking system is designed to capture energy and return it to the battery, but it is not intended to fully charge a car. Engaging this system for charging purposes while towing can be inefficient and potentially hazardous. There is a risk of overcharging the battery, which can lead to increased fire risks and damage to the electronics.

Alternative Charging Methods

Instead of relying on regenerative braking, users should plan their routes and ensure they have enough charge to reach their destination. Recharge stations or portable chargers should be used to keep the battery at optimal levels. This approach avoids the risks associated with flat-towing and ensures a safer and more efficient charge.

Conclusion

Flat-towing an electric car to charge it with a mobile home inverter or generator may seem like a convenient solution, but it comes with several drawbacks, including safety concerns, inefficiency, and potential risks from overcharging. While innovative, this method is not recommended by manufacturers and may be illegal in some areas.

Frequently Asked Questions (FAQ)

Can you charge an electric car while towing it on a trailer?

Yes, you can charge an electric car while towing it on a trailer through regenerative braking, but it is not recommended due to the risks involved. The system is designed to capture and return energy, but it is not intended for full charging and can be inefficient and potentially dangerous.

What are the risks of flat-towing an EV?

The primary risks include safety concerns due to the low-speed nature of the towing, the inefficiency of the process, and the potential for overcharging the battery, which can lead to decreased performance and increased fire risks.

What is the best way to charge an electric car while towing it?

The best way to charge an electric car while towing it is to plan your route and ensure you have enough charge to reach your destination. Utilizing recharge stations or portable chargers is a safer and more efficient alternative to relying on regenerative braking for charging.