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Unlock Green Mobility: Watts, Voltage, Amp-Hours in E-Bikes Explained

As time progresses, electric bicycles have become a common sight around us. We are curious about the integration of traditional bicycle and electric bicycle technologies. The popularity of electric bicycles is on the rise, not only making our lives more convenient but also providing riders with a stimulating and eco-friendly mode of transportation. When selecting the right electric bicycle for ourselves, understanding basic parameters such as watts, voltage, and amp-hours, and their impact on riding, is crucial for making the most informed decision.

Basic Parameters of Ebikes


Watts are a key metric for measuring the power of an electric bicycle's motor. The calculation of motor power in watts is based on the product of the battery voltage and the motor controller current. This means that higher wattage typically implies a more powerful motor, capable of providing greater power and performance. Watts also help us understand the performance of electric bicycles under different conditions, such as climbing hills or accelerating.


Voltage indicates the amount of electrical energy a battery can provide to an electric bicycle. Higher voltage usually means higher energy output, thus providing better performance. However, batteries with higher voltage may also be heavier or more expensive. Understanding the voltage of the battery is crucial for selecting an electric bicycle that suits individual needs.


Amp-hours measure the capacity of a battery, indicating the amount of time a battery can discharge at a certain current. In other words, higher amp-hour ratings mean larger battery capacity and longer distance the bicycle can travel. Amp-hours are a key metric for measuring the range of an electric bicycle.

Principle of Electric Bicycle Operation

Power Source: Battery

Electric bicycles are powered by rechargeable batteries, typically lithium-ion batteries. These batteries provide the energy needed for the electric motor, and the battery's capacity and voltage affect the range and speed of the bicycle.

Core of Riding: Electric Motor

The electric motor is the heart of every electric bicycle, responsible for propelling the bicycle forward. When the rider pedals or uses the throttle, the electric motor starts working, providing assistance and amplifying pedal power.

Intelligent Control: Motor Controller 

To ensure smooth and responsive riding, electric bicycles are equipped with motor controllers. This precision electronic device regulates the flow of power from the battery to the motor, adjusting output based on factors such as speed, terrain, and user input.

Pedal Assist System: Sensors

Many electric bicycles are equipped with pedal assist systems that detect the rider's pedaling action and adjust the motor output accordingly. Sensors integrated into the bicycle's drivetrain or crankset transmit information to the motor controller, enabling seamless assistance and enhancing the riding experience.

User Interface: Display Screen and Control Device

Modern electric bicycles come with intuitive display screens and control devices, providing riders with real-time feedback on battery status, speed, and assistance level. These interfaces, ranging from sleek LCD displays to handlebar-mounted control units, enhance the riding experience by making important information easily accessible.

Understanding the importance of watts, voltage, and amp-hours for electric bicycles' performance and longevity is essential. Additionally, knowing how bicycle construction affects these metrics is equally crucial. Choosing a reliable electric bicycle brand, such as Sohamo A2 Folding Ebike, ensures a smoother riding experience. Let's ride together and welcome each sunny day with joy.

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