lithium battery 18650 sales

　　Is fast charging of lithium-ion batteries the same as slow charging? what's the difference do you understand

　　The charging speed of electric vehicles is closely related to the charger power, battery charging characteristics and temperature. At the current level of battery technology, even fast charging takes 30 minutes to charge to 80% of the battery capacity. After exceeding 80%, in order to protect the safety of the battery, the charging current must be reduced, and the time to charge to 100% will be longer.

　　The charging speed of electric vehicles is closely related to the charger power, battery charging characteristics and temperature. At the current level of battery technology, even fast charging takes 30 minutes to charge to 80% of the battery capacity. After exceeding 80%, in order to protect the safety of the battery, the charging current must be reduced, and the time to charge to 100% will be longer. In addition, when the temperature is low in winter, the battery requires a smaller charging current, and the charging time will be longer.

　　Fast charging and slow charging of electric vehicles: why are there two charging modes?

　　We understand that a car can have two charging ports, in fact, because there are two charging modes: constant voltage and constant current. Generally, constant current and then constant voltage are used, so that the charging efficiency is relatively high. The reason why fast charging is fast is due to the difference in charging voltage and current. The higher the current, the faster the charging. When it is about to be fully charged, switch to constant voltage, which can prevent the battery from overcharging and also achieve the purpose of protecting the battery.

　　Fast and slow charging for electric vehicles: Why hasn't fast charging replaced slow charging?

　　Low temperature lithium iron phosphate battery 3.2V 20A -20℃ charge, -40℃ 3C discharge capacity ≥70%

　　Charging temperature: -20~45℃ -Discharging temperature: -40~+55℃ -40℃ supports maximum discharge rate: 3C -40℃ 3C discharge capacity retention rate≥70%

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　　The charging current and power of slow charging are relatively small, which is better for battery life, and the charging cost is low when the power consumption is low. Fast charging will use a large current and power, which will have a great impact on the battery pack and life expectancy. Fast charging also needs supporting equipment, such as converting AC and DC, so the cost will rise.

　　Fast charging and slow charging of electric vehicles: what should be paid attention to in winter maintenance of electric vehicles?

　　At present, most vehicles use lithium-ion batteries. At lower temperatures, the performance of lithium-ion batteries will decrease to varying degrees, manifested in the decrease of charging current and discharging current, and the decrease of battery capacity. In extreme cold conditions, it may even fail to charge the battery. Driving vehicles in winter will use warm air, which will increase the power consumption of the vehicle and reduce the mileage of the vehicle.

　　When using electric vehicles in winter, it is normal that the charging time becomes longer and the driving range of the vehicle becomes shorter. In use, it should be charged immediately after the vehicle stops, and the remaining temperature of the battery can be used to make the charging faster; when planning a trip, fully consider the decrease in the mileage of the vehicle in winter.

　　The charging speed of electric vehicles is closely related to the charger power, battery charging characteristics and temperature. At the current level of battery technology, even fast charging takes 30 minutes to charge to 80% of the battery capacity. After exceeding 80%, in order to protect the safety of the battery, the charging current must be reduced, and the time to charge to 100% will be longer. In addition, when the temperature is low in winter, the battery requires a smaller charging current, and the charging time will be longer.

　　Low temperature high energy density 18650 3350mAh-40℃ 0.5C discharge capacity ≥60%

　　Charging temperature: 0~45℃ Discharging temperature: -40~+55℃ Specific energy: 240Wh/kg -40℃ discharge capacity retention rate: 0.5C discharge capacity≥60%

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