If your battery is 48V 18Ah, your bike's motor power is 800w, it can last for 1.1 hours (70 minutes). So it can last 45 kilometers without pedaling. And reach a distance of 60km if using pedals.
E-bikes, or electric bicycles, have revolutionized the world of cycling by offering an eco-friendly and efficient mode of transportation. One of the most common questions among potential e-bike riders is, "How many hours does an e-bike battery last when fully charged?" In this article, We will teach you how to calculate duration and mileage from bike battery labels and parameters. As well as explore the factors influencing e-bike battery life and provide insights into estimating your e-bike's range. Let’s Learn what kind of bicycle external battery you need when buying!
How to Calculate E-Bike Range Based on Battery Specifications (Give A Calculation Example)
We are guiding you through the process of calculating e-bike range using an example with a 48V 18Ah electric bike battery and a 1000W bicycle motor.
Step 1: Calculate Battery Capacity
Battery capacity is measured in Watt-hours (Wh) and indicates how much energy the battery can store. To calculate the capacity of our 48V 18Ah battery, we use the following formula:
Battery Capacity (Wh) = Voltage (V) x Capacity (Ah)
For our example:
Battery Capacity (Wh) = 48V x 18Ah = 864Wh
So, our e-bike battery has a capacity of 864 Watt-hours.
Step 2: Determine Motor Power Consumption
Next, we need to know how much power our e-bike motor consumes during operation. In our case, the motor has a power rating of 1000W (Watt).
Step 3: Calculate Range
Now comes the crucial part—calculating the e-bike's range based on the battery capacity and motor power consumption. We use the following formula:
Range (miles) = Battery Capacity (Wh) / Motor Power Consumption (W)
For our example:
Range (hours) = 864Wh / 1000W = 0.864 hours
This means that with a 48V 18Ah battery and a 1000W motor, your e-bike can travel approximately 0.864 hours on a single charge under constant power consumption conditions.
(Electric bicycle battery structure)
Any more about the battery distance Range calculation formula:
Estimating E-Bike Range
To estimate how many hours your e-bike battery will last, you can use the following formula:
Battery Range (mi) = Battery Capacity (Wh) / Power Consumption (Wh/mi)
For example, if you have a 500Wh battery and your e-bike consumes 20Wh/mi, your estimated range would be:
Battery Range (mi) = 500Wh / 20Wh/mi = 25 miles
This formula provides an approximation of how far you can ride on a single charge. Keep in mind that the actual range may vary based on real-world conditions.
Factors Affecting E-Bike Battery Life on a Single Charge
Several factors can influence how long your e-bike battery lasts on a single charge:
Terrain: Riding on flat terrain requires less energy compared to hilly or mountainous areas. Climbing steep hills can significantly reduce your battery's range.
Rider Weight: Heavier riders require more power to maintain speed and may experience shorter battery life.
Riding Speed: Riding at high speeds consumes more energy than cruising at a moderate pace.
Assist Level: E-bikes often offer multiple assist levels, such as eco, normal, and high. Higher assist levels consume more battery power.
Wind Resistance: Riding against strong headwinds increases energy consumption and reduces range.
Tire Pressure: Proper tire pressure can affect rolling resistance. Under-inflated tires can decrease battery efficiency.
Temperature: Extreme temperatures, both hot and cold, can impact battery performance. Battery life may decrease in very hot or frigid conditions.
To extend the lifespan of your e-bike battery and maintain consistent performance, consider the following tips:
- Proper Charging: Use the charger provided by the manufacturer and avoid overcharging or leaving the battery plugged in for extended periods after it's fully charged.
- Storage: Store your e-bike in a cool, dry place when not in use. Avoid exposing it to temperature extremes.
- Regular Maintenance: Have your e-bike serviced by a qualified technician who can inspect the battery and its connections.
The duration an e-bike battery lasts when fully charged is influenced by its capacity and power consumption. Estimating your e-bike's range using the provided formula can help you plan your rides effectively. Additionally, factors like terrain, rider weight, and riding speed play a significant role in determining actual battery life. With proper battery management and maintenance, you can enjoy extended rides on your e-bike and maximize its lifespan.
Hycline offers secure and dependable high-quality external E-Bike Batteries, available in various models ranging from 36/48/52V with power outputs ranging from 0 to 1500W. These batteries can be used for powering your electric bicycle externally, or for converting your regular bicycle into an electric-assist bike.