My newly bought electric four-wheeled vehicle, the weather changed recently, and it ran 15km at 0℃ and 4℃, and the battery power was gone. What is the reason?

The weather will affect the battery capacity, and the heavy cargo will accelerate the battery capacity decay. It is precisely because of the phenomenon of "small horse-drawn cart" that the battery capacity is accelerated and the continuous mileage of vehicles is obviously reduced, which leads to constant complaints from users and affects the reputation of the whole vehicle and batteries. Therefore, once the vehicle configuration is determined, it is necessary to choose a battery with appropriate specifications.

According to the running power of 350W, the average running current is 350W/48V=7.3(A), while the actual new 10Ah battery is discharged for 7.0A, the duration is only about 90-95min, and the 6-DZM- 12 battery is discharged for 7.0A, and the discharge time is1/kloc.

Security risks:

First, the battery of an electric car must be fully charged when stored. After one month's storage, when you are ready to continue to use it, you need to charge it once or twice to continue storage, which can prolong the service life of the battery. In general, it is best to keep the battery charging within 12 hours to avoid damaging the battery due to too long charging time.

Second, the charging of the battery has nothing to do with the speed, but mainly the discharging time. If the discharge time is long, it can continue to be used. If the battery can be charged and discharged, it means that it can continue to be used.