c Tom Hartley said that too high and too low state of charge has a negative impact on the life of lithium batteries. Most resellers that are sold on appliances or on batteries are re-charged based on 80% discharge. Experiments have shown that for some notebook lithium batteries, the battery voltage often exceeds the standard voltage of 0.1 volts, that is, from 4.1 volts to 4.2 volts, then the battery life will be halved, and then increased by 0.1 volts, the life is reduced to the original 1 /3; A long-term low-power or no-power state will cause the internal resistance of the battery to move more and more, resulting in a smaller battery capacity. NASA's NASA sets the battery's power consumption on the Hubble Space Telescope at 10% of its total capacity to ensure that the battery can be recharged and discharged 100,000 times without having to be updated. Second, temperature also has a large impact on the life of lithium batteries. The environment below the freezing point may cause the lithium battery to burn out at the moment when the electronic product is turned on, and the overheated environment will reduce the capacity of the battery. Therefore, if the notebook does not take off the battery after long-term use of the external power supply, the battery will be in the high heat of the notebook for a long time, and will soon be scrapped. Therefore, the following points can be summarized to extend the capacity and life of the lithium battery. 1. If you have used an external power supply to power your notebook for a long time, or if the battery power has exceeded 80%, remove the battery immediately. Usually, the battery does not need to be fully charged, and it can be charged to about 80%. Adjust the power option of the operating system to adjust the battery alarm to more than 20%. The battery level should be at least 20%. 2. Small electronic devices such as mobile phones should be disconnected immediately after charging the power cable (including the USB interface for charging function). The connection will damage the battery. Always charge, but you don't have to fill the battery. 3. Whether it is for a notebook or a mobile phone, you must not let the battery run out. 4. If you want to travel, you can charge the battery, but charge the appliance whenever possible. 5. Use a smarter and more power-efficient operating system. Ramie Fiber Packing,Flax Packing,Cotton Fiber Packing,Ramie Packing Sunwell Sealing Materials Co., Ltd. , http://www.nbgaskets.com