2024-12-10
We often hear that lithium batteries have a memory effect. The new battery should be charged for some more time after it is full, so that the capacity of the battery can be expanded a little. Is that right? Do lithium batteries have memory effects? Today Xiaobian to discuss with you.
In fact, the memory effect of lithium batteries is a misunderstanding. The memory effect is nickel-cadmium (Ni-Cd) or nickel-metal hydride (Ni-MH) batteries. Nickel-cadmium batteries have high durability and reliability, especially in extreme environments. But because of its environmental pollution problems, its use is gradually decreasing. Such batteries are commonly used in engineering tools, walkie-talkies, emergency power supplies, and certain medical devices, and are not common in our daily lives.
The lithium batteries used in our lives, mobile phones, energy storage devices, are equipped with battery management systems. It can well manage and regulate the battery charging and discharging process to avoid unnecessary battery loss. For example, when our mobile phone is fully charged at night, it stops charging, in order to avoid the loss caused by overcharging.
Moreover, the charge and discharge of lithium batteries are based on the process of embedding and deembedding of lithium ions, so they do not have memory effects.
Although the lithium battery has no memory effect, it will cause a decrease in capacity due to some improper use. It is an actual loss, not a memory.
Although lithium batteries do not have a memory effect in the traditional sense, their capacity can still decline with time and conditions of use, mainly because of the following reasons:
1, often full discharge (SOC down to 0%) or full charge (SOC up to 100%) will accelerate capacity loss.
2, high and low temperature: the use or storage of lithium batteries at extreme temperatures will damage the internal chemical structure of the battery.
3, charging habits: keeping high power for a long time (such as long-term plug-in) or storage under low power will affect battery life.
4, charge and discharge cycle: Each charge and discharge cycle will produce a small amount of irreversible chemical changes, resulting in a gradual reduction in battery capacity.
1, avoid completely full or no electricity vacant;
2, keep the battery power between 20%-80% is the best state;
3, avoid use at extreme temperatures, use and store batteries at ambient temperatures between 0°C and 35°C.
4, avoid storing high or low power for a long time: if not used for a long time, keep the battery between 40%-60% storage.
5, use high-quality charging equipment: use official or reliable brand chargers to avoid overcharging or unstable current.
Lithium batteries do not have traditional memory effects, but their capacity may gradually diminish due to other factors. Through rational use and storage, the life of lithium batteries can be extended to the greatest extent.
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