What are the precautions for charging lithium batteries for electric vehicles and mobile phones?

The correct use of lithium batteries is inseparable from knowing the charging and discharging process of lithium batteries. 1. The charging method of the lithium battery of electric vehicle. First, when charging for the first time, it is the same as usual. No special treatment is required. Charging can be done for eight to twelve hours. Second, the special charger supplied by the lithium battery manufacturer must be used for charging. When charging, first connect the output port of the charger to the battery, and then connect the charger to the power source. Third, because the lithium battery has no memory effect, it can be charged at any time, which is good for the life of the battery. It is recommended that each charge is eight to twelve hours, and the maximum time should not exceed one day. Fourth, in the case of long-term non-use, the lithium battery needs to be charged for two hours every two months, otherwise the battery performance will decrease. In addition, try not to charge the battery after it is fully discharged, it is best to charge as you use it, and discharge shallowly. 2. How to charge mobile phone lithium battery 1. Lithium battery generally has a shelf life of 3 years, and it will decay quickly after three years whether it is used or not. Pay attention to the fullchargecycle of lithium batteries, which decay quickly after about 400-500 times. It depends on whether you use it for 3 years or the number of times you charge it first. 2. In addition to being afraid of low power, lithium batteries are also afraid of heat, especially when charging, if the heat dissipation of the mobile phone case is poor, pay attention to removing it. The long-term storage method for lithium batteries is to charge them to 40% and put them in the refrigerator, but remember not to freeze them. 3. Don't always wait until the power is exhausted before charging, which will speed up its loss. Lithium battery has a large loss when it is in low power. Long-term use of 40%-60% power can make it the longest life, but for frequently used equipment, this is impossible, but you can always keep it at 100%, that is, often Charging, don’t pull it out. It will not overcharge, and at this time, the power is used, the battery will not waste chargecycle, so it is beneficial to extend the life. 4. The lithium battery can be used when charging. The battery is not charged while discharging. There are two circuits in the mobile phone, one to charge the battery and the other to directly supply power to the machine through AC. 5. After charging, connecting to the power supply will not cause any harm to the lithium battery, because it is directly powered by the power supply, which reduces the number of recharges but also helps to extend the battery life. 6. (To be discussed) Always charging when the battery is higher than 90% but lower than 100% is not good for lithium batteries, that is, always toppingoff. Thinkpad notebooks have a mechanism that keeps the battery from charging at 90% or more. 7. There is no harm in charging overnight, because you are not using it, it will not show heat. Personally think that overcharging is always not a good thing. It’s best not to charge at night. In some areas, the voltage is unstable at night, which is harmful to the machine!! Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete Previous post: How to solve the safety of lithium iron phosphate batteries?