The lifespan of mobile phone batteries, under normal conditions of use and without serious impact, is set by the manufacturer at 5 years. In humid and rainy areas, battery life will be affected. Battery life is related to battery type and number of charges. For example, a nickel-metal hydride battery should be purchased after about 200-300 charges, a nickel-chrome battery can be charged 100-150 times. , and a lithium battery can be charged 350-300 times 700 times. The longer the interval between each charge and discharge of the battery, the longer the battery life. Battery life is therefore also related to how the battery is used.
The lifespan of a lithium battery is not calculated in years, but in cycles.
The lifespan of a lithium battery is "500 times", which does not refer to the number ofe charges, but with a charge and discharge cycle.
Nowadays, cell phones use lithium batteries. The number of cycles of most lithium batteries is generally about 500 times, that is, 0 to 100 corresponds to one cycle (a cycle of 100 corresponds to one cycle). reached 500 times The battery of the mobile phone has already weakened, the internal resistance of the battery has increased, the activity of the chemical elements inside has decreased, and it has entered a rapid consumption stage.
Everyone has had this experience. A very old cell phone turns off after making a call after being fully charged. In this case, we can understand that the battery is exhausted.
Detailed information:
Charging cycle refers to the battery from full to empty, then from The process from empty to full is different from charging. For example, theLithium-ion batteries only use half their charge on the first day before being recharged. If you charge again the next day, you'll charge half and get two charges, which counts as one charge cycle not two.
Therefore, it usually takes several charges to complete a cycle. Battery capacity decreases slightly after each charge cycle. This is, however, a very small reduction. High-quality batteries retain 80% of their original capacity after several cycles, and many lithium-ion products will still be used after two to three years.
Reference materials:
Baidu Encyclopedia-Lithium battery