- Depth of discharge and rechargeable times
The number of rechargeable batteries is proportional to the depth of discharge, the shallower the battery discharge depth, the more rechargeable times. The total number of completed charging cycles = the number of rechargeable times * the depth of discharge; the lower the total number of completed charging cycles, the lower the life of the battery, that is: actual battery life = the number of rechargeable times * the depth of discharge.
- Overcharge, overdischarge, and large charge and discharge current
The performance of lithium batteries will be affected by any form of overcharging, causing serious damage or even explosion, so it is necessary to avoid overcharging of the battery. And it is necessary to prevent deep discharge lower than 2.5V or 2V, otherwise it will quickly and permanently damage the lithium-ion battery, and it is also easy to cause a short circuit caused by internal metal plating, making the battery unsafe and unusable. In addition, excessive charging and discharging currents should also be avoided, because high currents tend to put excessive pressure on the battery.
- Too cold and too big environment
The life of lithium batteries is greatly affected by temperature. Electronic products using lithium batteries are easily burned instantly when opened in a sub-zero environment. On the contrary, excessively high temperatures will reduce the capacity of the battery. It is best to turn off digital products, once the operating temperature exceeds 60 degrees, it will accelerate the aging of lithium-ion batteries. Lithium ion discharge temperature range: 0-60℃, lithium battery charging temperature range: 0-45℃.
- Long time full power, no power state
Too high or too low battery status will have an impact on the life of the lithium battery. Long-term low battery or no battery will increase the resistance of the electron movement inside the lithium battery, resulting in a decrease in battery capacity. The intermediate state of the battery is 50 % power is the best state of the lithium battery, and the service life is the longest. Generally, the best state to protect the battery is to maintain the power at 10%-90%.
The above is the relevant introduction about the life of lithium batteries. Around the development of microelectronics technology in the 20th century, small-scale equipment is increasing day by day, and lithium batteries have also entered a large-scale practical stage. It is widely used in energy storage power systems such as solar power plants, wind power, fire power, and hydraulic power, and is also used in uninterruptible power supplies for post and telecommunications, as well as in electric vehicles, military equipment, aerospace, electric motorcycles, electric tools, electric bicycles, etc. application.