Regeneration is a pretty positive term. It promises our bodies recovery and, in the context of energy generation, it stands for sustainable electricity and heat production. And rightly so: After all, what could be more positive than embracing a sustainable lifestyle? In this sense, we come across this word when talking about an ebike with regenerative braking, among other things.
The concept behind this is to capture the energy generated during braking and redirect it back into the motor or battery. In essence, it creates a cycle wherein less electrical energy is expended, consequently extending the range and minimizing potential charging expenses.
While the concept has been experimented with and proven in cars for some time, it is by no means a universal standard. But is an ebike with regenerative braking even worthwhile, considering its inherent efficiency in conserving electrical energy?
We’ll show you whether regenerative braking makes sense in practice and give you tips on how to ride your bike in a truly environmentally friendly way.
What Is Regenerative Braking?
First and foremost, it is an innovative technology that is playing an increasingly important role in the world of electromobility. It not only revolutionizes the riding experience, but also makes a significant contribution to environmental protection. But how exactly does energy recovery or recuperation work?
The Principle of Regenerative Braking on Electric Bikes
E-bikes such as the Ampler models are usually equipped with an electric motor, a battery, and a control system. In an ebike with regenerative braking, the electric motor becomes the central player. In normal operation, the motor drives the e-bike by converting electrical energy from the battery into mechanical energy. When braking, however, this process is reversed.
As soon as the rider applies the brakes, the e-bike’s control system activates the motor to act as a generator. Instead of consuming energy, the motor now generates electricity. The kinetic energy generated by the movement of the e-bike is converted into electrical energy. This reclaimed electrical energy then flows back into the battery, where it is stored.
In this way, energy is efficiently converted and stored. Corresponding models of an ebike with regenerative braking are designed to capture and convert a large proportion of the kinetic energy released during braking. This not only improves the overall efficiency of the e-bike, but also helps to maximize the range of the vehicle between charging cycles.
System Components of Regenerative Braking Systems
A regenerative braking system of an electric bike or an EV consists of several key components that work together seamlessly to enable efficient energy recovery. They are an impressive example of how innovative technologies can contribute to greater sustainability. The core components:
- Electric motor/generator: The core of the regenerative braking system. In standard operating mode, this component functions as a motor that drives the vehicle. During braking, it transforms into a generator that converts kinetic energy into electrical energy and returns it to the battery.
- Battery/rechargeable battery: It serves as a storage medium for the electrical energy generated during braking. Modern batteries must be efficient, durable and powerful enough to make optimum use of the recovered energy.
- Control unit: Advanced electronics responsible for controlling the transition between engine and generator operation. It ensures that the energy flow between the engine, battery, and other system components is efficient and smooth.
- Braking system: Although a regenerative braking system does some of the work, the mechanical system remains essential for safety. It works hand in hand with the regenerative system to ensure optimal performance.
- Sensors and feedback systems: These components continuously monitor various parameters such as speed, battery charge and energy efficiency. They provide important data to the control unit that is needed to adjust and optimize the system.
- Energy conversion and management system: This system ensures that the energy produced by the generator is efficiently fed into the battery and stored there. It plays a crucial role in maximizing the energy yield from each braking operation.
The Advantages of an eBike With Regenerative Braking
That’s the theoretical foundation. However, what’s more significant for you personally are the tangible benefits that regenerative braking offers you in practice:
- Increase range: it converts the energy that is normally lost into usable electrical energy. This means that your battery is recharged while you ride. Especially on long descents or in city traffic, where braking is frequent, you can noticeably increase your range in this way.
- Efficiency in action: Compared to conventional bicycles or motor vehicles, where braking energy is dissipated as heat, an e-bike uses this energy sensibly. It is an efficient way to save energy and protect the environment at the same time.
- Environmental protection is not an empty word: by relying less on external power sources, you reduce your ecological footprint. An ebike with regenerative braking makes transportation even greener.
- Save money: It helps you save money in the long term. Your battery lasts longer, and you have to charge it less often.
- Less deterioration, less concern: Such systems take the strain off mechanical brakes, which reduces degradation.
Comparison of Regenerative and Conventional Braking Systems on an Electric Bike
| Criterion | Regenerative braking | Conventional braking |
| Energy efficiency | Converts kinetic energy into electrical energy, which increases the range of the e-bike. | Converts kinetic energy into heat, which leads to a loss of energy. |
| Braking performance | Provides smooth and controlled deceleration, increasing safety. | Can vary depending on weather conditions and road surface, but generally similarly effective. |
| Wear and maintenance | Reduced brake pad wear, longer life and lower maintenance expenses. | Depending on type, higher wear on pads, regular maintenance required. |
| Environmental impact | More sustainable by recovering energy and reducing waste. | It generates heat and wear, which can lead to environmental pollution. |
| Price | More expensive to purchase, as regenerative systems require more complex technologies. | Normally, significantly cheaper. |
| Increased range | Increases the range of the e-bike as energy is recovered. | Has no influence on the range. |
Are All eBikes Designed for Recuperation?
The advantages of an ebike with regenerative braking sound almost too good to be true? You could be right. In theory, the system is extremely promising — but its complexity also makes it expensive. As e-bikes use relatively little energy, the low-energy yield that can be recovered during regenerative braking usually does not justify installation.
Accordingly, only certain (predominantly high-priced) models are designed for energy recovery — the concept is therefore far from being universally applicable as standard equipment.
Does It Still Make Sense to Purchase an eBike With Regenerative Braking?
If you solely consider the cost-benefit ratio, then probably not. However, for longer rides or in hilly areas where frequent stopping and accelerating is required, regenerative braking still offers a significant advantage. It increases the range and efficiency of the e-bike by recovering the energy released and recharging the battery.
This reduces energy consumption and protects the mechanical brakes. At the same time, it extends the service life of the battery.
However, the efficiency of recuperation depends on various factors, such as the weight of the ebike with regenerative braking, the riding dynamics and the specific riding situation. The benefits of energy recovery are significantly lower for lightweight e-bikes or those that are mainly used in flat areas.
Retrofitting
While some newer e-bike models are already equipped with recuperation technology, this option is often missing on older or simpler models. But is retrofitting possible?
Technically speaking, retrofitting an ebike with regenerative braking is feasible, but usually complex and costly. It requires not only the installation of a suitable motor that can act as a generator, but also a compatible battery and a control system that can handle energy conversion and storage efficiently. Furthermore, not all e-bike frames and components are designed for the additional requirements of such a system.
In practice, retrofitting is therefore difficult. Other methods of riding your e-bike in a more environmentally friendly and energy-saving way are more recommendable.
10 Tips for Riding an eBike in an Environmentally Friendly Way
Even if you don’t own an ebike with regenerative braking system, electric bikes are in themselves a sustainable alternative to traditional commuting by car. But as an e-bike rider, you can reduce your ecological footprint even further. Here are ten effective tips to help you cycle even greener:
Optimize Your Riding Style
Efficient driving is not only important for cars. Avoid abrupt acceleration and hard braking. A smooth, considered riding style helps to maximize battery performance and minimize energy consumption.
Choose the Right Assistance Level
E-bikes offer different levels of assistance. Use the lower levels if you need less assistance. This saves energy and increases the range of the battery.
Regular Maintenance
Keep your e-bike in top condition. Regular maintenance, such as checking the tire pressure and lubricating the chain, improves the efficiency and service life of the bike.
Avoid Unnecessary Luggage
Weight plays a significant role in the efficiency of your e-bike. Try to minimize unnecessary luggage. The lighter the bike, the lower its energy consumption and the longer a battery charge lasts.
Charge According to Plan
Charge the battery in an environmentally conscious way. If possible, use renewable energy sources and avoid charging at peak times.
Ride More, Ride Smart
Use your e-bike as often as possible. Replace car journeys with e-bike tours to sustainably reduce CO₂ emissions.
Intelligent Route Management
Plan your routes intelligently. Shorter and more efficient routes save energy and time. This is particularly effective for bikes with their own app, such as the Ampler models
Use Solar Energy
Depending on the circumstances, a solar charger for your e-bike can be useful. Not only does this save you money, but also uses one of the cleanest forms of energy available.
Recycle Old Batteries
When the battery has reached the end of its service life, don’t just dispose of it carelessly. Batteries should be recycled properly to avoid environmental damage.
Combine eBike Journeys With Public Transport
An alternative to increase your range, especially for longer distances. This can mean covering part of the route by e-bike and switching to trains or buses for longer distances.
FAQ
How effective is regenerative braking on an electric bike?
The effectiveness of an ebike with regenerative braking varies depending on the model and usage scenario. In hilly areas or with frequent stop-and-go in the city, a regenerative braking system can significantly increase the range.
Does regenerative braking affect the ride feel of my ebike?
Yes, it can influence the riding experience. Many users report smoother braking and improved control of the bike, especially when riding in hilly terrain.
Can regenerative braking fully charge my e-bike battery?
No, regenerative braking cannot fully charge the battery of your electric bike. It serves to extend the range and reduce energy consumption, but it does not replace conventional charging.
Is special maintenance required for an ebike with regenerative braking?
The maintenance requirements for such e-bikes are similar to those for conventional bikes. However, the additional components of the regenerative braking system should be checked regularly.
Conclusion
Renewable energy does not even stop at supposedly established and conventional technologies such as braking systems. Regenerative braking is more than just a way of reducing speed on an electric bike. It enables e-bikes to convert kinetic energy into electrical energy during braking and feed it back into the battery. An ebike with regenerative braking system means more range and a more environmentally friendly ride.
However, there is a giant catch: the price and therefore the cost-benefit factor is too low for most e-bikes, at least at the moment. It simply doesn’t make sense to install an expensive regenerative braking system on an electric bike if the energy recovered is comparatively low.
An Ampler bike is much cheaper but still environmentally friendly. Our models with a range of 70 km (43.5 miles) will get you reliably through the city without recharging. Regenerative braking would not give you any noticeable advantage here.
Instead, with models like our sporty Curt, you ride with high-quality hydraulic disc brakes from Shimano, which are designed for strong braking power and durability. And lightweight components such as the carbon fork and the effective belt drive ensure that you can navigate through the urban jungle in a particularly agile and environmentally friendly way — without having to purchase an ebike with regenerative braking.
