Structure and function of batteries in e-choppers and e-scooters

Star-Biker’s e-choppers and e-scooters use Lithium-ion batteries, known for their high energy density and low weight, enable our vehicles to achieve long ranges without significantly increasing the overall weight.

Watts, volts and amps: Important units of measurement for the battery

The performance and endurance of an e-chopper or e-scooter are determined by several factors, including the battery's wattage and voltage. Watt-hours (Wh) of a battery are calculated by multiplying the voltage (volts) by the battery's capacity (Ah). For example, a battery with a capacity of 18 Ah and a voltage of 25 V produces 450 Wh of energy.

The range of your e-chopper

The range of an e-chopper or e-scooter depends on several factors, such as riding style, rider weight, road conditions, temperature, and speed. To ensure your vehicle meets your needs, consider how important range is to you when choosing an e-chopper or e-scooter.

Structure of lithium-ion batteries

A lithium-ion battery contains many small battery cells. These consist of two conductive layers—aluminum and copper—as well as the cathode (positive pole) and the anode (negative pole). The lithium ions move between the poles of the battery to store and release energy. Between the cathode and the anode is the electrolyte, which enables the flow of ions.

Charging and discharging the battery

During charging, voltage is applied to the battery, causing lithium ions to migrate from the cathode to the anode. During discharging—that is, during use of the e-chopper or e-scooter—the reverse process occurs: The ions move back to the cathode, releasing the stored energy.

Lifespan of lithium-ion batteries

Lithium-ion batteries have a lifespan of approximately 2,000 charge cycles, which can correspond to a driving range of up to 200,000 km. However, over time, the battery loses capacity, meaning the e-chopper or e-scooter offers a reduced range after each charge. However, the battery doesn't suddenly "die"; rather, its capacity gradually decreases over time.

Charging cycles and care

A charge cycle is the process by which the battery is fully discharged and recharged. For example, if you discharge and recharge the battery to 50% every day, this counts as one charge cycle. To maximize the battery's lifespan, it should not be stored for extended periods at either 100% or less than 50% charge.

Maintenance tips for your e-chopper's battery

To ensure your lithium-ion battery functions reliably for a long time and your e-chopper always delivers the best possible performance, please follow the maintenance tips below:

• The battery should not be exposed to temperatures above 50°C or below -25°C.
• Avoid moisture and keep the battery away from fire.
• Make sure to maintain the battery regularly and ensure it is stored correctly.