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As the cold air descends, many users feedback that the driving/cruising distance of the E-Bike has decreased quite a lot, and the charging frequency is increasing. Could it be possible that the battery is broken/aging/damaged?
Don't worry, the temperature is getting colder, and the mileage of the E-Bike is insufficient, all these are normal phenomenon.
Why can't battery life go far in winter?
First of all, from the relationship between battery capacity and temperature.
Taking lead-acid batteries as an example, the actual capacity of the battery decreases as the temperature decreases.
The optimum temperature for the electro-chemical reaction inside the lead-acid battery is 25℃. When the temperature is lower than from 25℃, the temperature drops 1℃ the battery capacity will drop by 1℃, and the lower the temperature, the faster the battery capacity will drop.
Under normal circumstances, when the temperature is 0℃, the actual capacity of the lead-acid battery is only about 70% of the nominal capacity.
When encountering cold weather, such as -10℃, the capacity of the battery may only be 50% of the nominal capacity or lower.
Generally, after the temperature rises, the battery capacity will gradually rise and return to normal.
We wear a lot in winter, and the wind resistance increases during riding, which affects battery life. At the same time, the air density is high in winter, and air resistance will also increase the burden on electric vehicles.
Moreover, the drop in temperature will cause the air in the tires of electric vehicles to expand with heat and contract with cold, resulting in lower tire pressure, greater friction between the tires and the ground, and more energy loss when riding.
Therefore, it is necessary to properly inflate the tires of electric vehicles in winter to reduce the friction between the tires and the ground and reduce power consumption.
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