Analysis of polymer battery maintenance experience

Maintenance tips 1. What is the charging cycle (or called the charging and discharging cycle)? Many people think that the life of a polymer battery is the number of charging cycles, but it is actually wrong. Strictly speaking, it should be called a charging cycle. A complete charging cycle is to charge 100% of electricity, and then discharge 100% of electricity. The life of a lithium battery is about 300-500 complete charging cycles. The correct statement about the life of lithium batteries should be 300-500 full charge and discharge. In other words, suppose a battery overflows with 100%: 50% is used and 30% is charged. This is not a complete cycle. A complete cycle is charged and discharged with two 100%. This is actually a 40% cycle. After 60% is used to charge 40%, then there is a 90% cycle. By analogy, lithium batteries have no memory effect, so I agree with Apple's proposal that the use of lithium batteries should be to use some, charge some, not charge for too long, and do not need to be exhausted. To charge the battery, it is best to use a small current to charge, generally 0.5C-2C charging, small current is less irritating, and can better maintain the battery. 3. Beware of over-charge and over-discharge. Generally, the charge cut-off voltage is set to: 4.25V, and the discharge cut-off voltage is about 3.0V. The discharge cut-off voltage should be determined according to the actual situation. For example, when playing violent 3D, the discharge cut-off The voltage is best set at about 3.4V, below this value, it is easy to cause the entire battery pack to be over-discharged due to instantaneous over-discharge. Be alert for full battery storage. When not in use for a long time, the lithium battery should be taken out and placed in a cool and dry place. Do not freeze and beware of water erosion. Be wary of using it in a hot car. For long-term storage, charge the battery to 40% and store it, or store the voltage between 3.75 and 3.85V. Maintenance experience 2: Do you want to turn on USB charging? More and more devices now support USB charging. I personally feel that it’s okay if I can’t turn it on. This is the reason. But with USB charging, I saw a friend post saying that it was not fully charged due to insufficient voltage (the PDA has never encountered it, it can be overflowing, I don't know why 580 can't), I also encountered the same situation. From a habit, I still don’t want to charge the battery every time I plug in the USB. It is a matter of habit, so I turn off the USB charging myself. If you don’t have a power supply, you can turn it on again to charge it, which is convenient anyway. At the same time, I don’t know if charging the mobile phone under non-standard voltage will affect the mobile phone and battery. Without knowing the end, individuals tend to turn off USB charging as much as possible. Maintenance experience 3. What should I do if the lithium battery is not used? The self-discharge rate of the lithium polymer battery is still a bit high. To be on the safe side, if it is not used, it is best to overflow first, and then store it in a plastic bag sealed. Take it out and use it once every 1-2 months, that is, charge and discharge it once to keep the lithium ion active. Do not exceed 3 months at the longest, and be sure to take it out and charge it once. If it is stored for too long and not used, the lithium ion activity will decrease, which will affect the battery life. Maintenance experience 4: How to charge better? The last small suggestion, the original lithium battery is best not to use a brand-name charger to charge, just use the equipment + original charger, or buy an original charger. Because miscellaneous-brand chargers often do not use standard voltage and current, they are harmful to the original battery. Especially the old-fashioned charger with discharge function, don't use it, if you accidentally over-discharge, the battery will be exhausted. Maintenance tips 5. Lithium battery is used in an environment that is too hot or too cold to use lithium batteries, which will also affect the life of lithium batteries. Therefore, do not leave your mobile phone in the car or exposed to the sun on a hot day; if it is in winter It’s over minus 20 degrees outside, so don’t take your phone outside (exposed for a long time), or put it in a warm pocket and use earphones (don’t use Bluetooth earphones, which also have lithium batteries). Polymer lithium battery: the temperature range is 0～+45℃ when charging; the temperature range is -20～+60℃ when discharging; the long-term storage environment of the battery is: temperature -20～+35℃. Shenzhen Gegeruipu Battery Co., Ltd. can develop customized batteries under various conditions such as the use environment and method of the battery. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: Why does lithium battery spontaneously ignite