The reason why lithium batteries cannot be charged when they have not been used for several months is that the activity of the internal chemical materials has decreased.
1. Among the parameters of the lithium battery, there is a discharge cut-off voltage, because after the lithium battery is activated, there must be a certain amount of energy inside due to the material, and the power must Do not be consumed, otherwise it may fail to charge, discharge cut-off voltage is a protective measure for lithium batteries to prevent the battery from being completely exhausted.
2. The rechargeable lithium battery has not been used for several months and cannot be charged now. This is because the lithium battery has not been charged for a long time and the voltage at both ends becomes very low. For lithium batteries with internal protection board,If the voltage of the lithium battery is too low, the electronic switch on the protection board will close the charging and discharging channels of the lithium battery, making it impossible to charge the lithium battery with an ordinary charger . By the way, the natural discharge of a good lithium battery is very low. If it can't be connected to any load, the voltage won't get very low for a few months and so it won't be able to charge.
3. Due to the self-discharge phenomenon of lithium batteries, the battery voltage should not be lower than its cut-off voltage, preferably between 3.8 and 4.0 V. It is recommended to charge lithium batteries once times per month ; six months and the battery must be kept above the cut-off voltage; The temperature and humidity of the battery storage environment must be appropriate and used according to specifications. It is preferable toe do not charge new and old batteries of different brands, capacities and types; together or to charge combined battery packs.
4. If your lithium battery will not be used for a long time, it should be sealed and packaged. It is best to stick insulating leather on the positive and negative terminals of the battery to prevent its positive and negative terminals from contacting other conductive materials. In this way, the power loss of lithium batteries can be effectively reduced. In this regard, we can look at the batteries purchased from Super. Many batteries stick insulating leather on the positive and negative electrodes of the battery to prevent the positive and negative electrodes of the battery from contacting conductive materials, thereby affecting the power of the battery. The above is the answer to the question of why lithium batteriescannot be charged when they have not been used for several months and are waiting to be recharged.
Why can't lithium batteries be charged if not used for a long time?
Low voltage charging, use a charger with lower voltage than original. When the battery is charged to 20%, the voltage will return to the value, then replace it. with the original charger.
Charging a single battery, charging each individual battery in the battery pack, but pay attention to the charger voltage to be consistent with the single battery. This method restores the rechargeable consumption of the battery. The time is longer.
Precautions for using lithium batteries
What should be noted when using lithium batteries is that the battery will enter a dormant state after being thereleft for a period of time, which will cause self-discharge. The battery is running out of power. At this time, the capacity is lower than normal, making the battery too weak and unable to charge.
Due to the characteristics of lithium batteries themselves, lithium batteries have almost no memory effect. Therefore, the new lithium batteries found in users' cell phones do not require special methods and equipment during the activation process.
ElectricityWhat should I do if the lithium battery on the train can continue to run but cannot be charged?
Lithium batteries discharge automatically if the battery voltage is lower than 3.6V and are stored for a certain period of time. long time without being used, the battery will be over-discharged and destroyed. The internal structure of the battery reduces its lifespan. By idiotsTherefore, lithium batteries stored for a long time should be recharged every 3 to 6 months, that is, they should be charged at a voltage of 3.8 to 3.9 V (the voltage The optimal storage capacity of lithium batteries is approximately 3.85 V) and do not recharge them. be fully charged.
Detailed information:
Any form of overcharging lithium-ion batteries will result in serious damage to battery performance or even an explosion. Lithium-ion batteries should avoid overcharging the battery during the charging process.
Do not frequentlyt unload or load deeply. However, every 30 charging cycles, the power detection chip will automatically perform deep discharge and deep charge to accurately assess the battery condition.
The lithium battery of the electric vehicle can still be used but cannot be charged:
1. The lithium battery protection board is broken and the protection circuit board needs to be repaired. Is handed over, replaced.
2. Use a battery that has been confirmed by others to be in good condition and can be used normally on the charger. Check if the charger is broken and replace the charger.
3. The electric vehicle has been used too long and is getting old. Please replace the battery.
"Lithium battery" is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses non-aluminum electrolyte solutionqueuse. Lithium metal batteries were first proposed and studied by Gilbert N. Lewis in 1912. In the 1970s, M. S. Whittingham proposed and began studying lithium-ion batteries. Since the chemical properties of lithium metal are very active, the processing, storage and use of lithium metal are subject to very high environmental requirements. Therefore, lithium batteries have not been used for a long time. With the development of science and technology, lithium batteries have now become mainstream.