Lithium battery precautions and methods of use

1. How to charge a new battery. When using lithium batteries, it should be noted that the battery will enter a sleep state after being left for a period of time. At this time, the capacity is lower than the normal value, and the use time will be shortened. But the lithium battery is easy to activate, as long as 35 normal charge and discharge cycles can activate the battery and restore normal capacity. Due to the characteristics of the lithium battery itself, it is determined that it has almost no memory effect. Therefore, the new lithium battery in the user's mobile phone needs no special methods and equipment during the activation process. Regarding the activation of lithium batteries, many claims are: the charging time must be more than 12 hours, repeated three times in order to activate the battery. The statement that the first three charges should be charged for more than 12 hours is clearly a continuation of the statement that nickel batteries (such as nickel-cadmium and nickel-metal hydride). So this statement can be said to be misinformation at the beginning. The charge and discharge characteristics of lithium batteries and nickel batteries are very different, and I can tell you very clearly that all the serious official technical materials I have consulted emphasize that overcharge and overdischarge will affect lithium batteries, especially liquid lithium. The battery causes great damage. Therefore, it is best to charge according to the standard time and standard method, especially not to charge for more than 12 hours (the charger shows that it is overflowing). In addition, lithium batteries or chargers will automatically stop charging after the battery overflows, and there is no such thing as a trickle charge of nickel chargers that continues for 10 hours. In other words, if your lithium battery is overflowing, it will be white charged on the charger. And none of us can guarantee that the characteristics of the battery's charging and discharging protection circuit will never change and the quality will be foolproof, so your battery will be on the verge of danger for a long time. This is another reason why we oppose long charging. In addition, another aspect that cannot be ignored is that lithium batteries are also not suitable for overdischarge, and overdischarge is also very detrimental to lithium batteries. 2. This is often seen when charging should be started in normal use. Because the number of charging and discharging is limited, the battery of mobile phones should be used up as much as possible to recharge. In fact, the life of lithium batteries has nothing to do with this. Here is an example of a test table about lithium battery charge and discharge cycles. The data about cycle life is listed as follows: Cycle life (10%DOD):u003e1000 cycles Cycle life (100%DOD):u003e200 times, where DOD is the depth of discharge The English abbreviation of. It can be seen from the table that the number of rechargeable times is related to the depth of discharge, and the cycle life at 10% DOD is much longer than that at 100% DOD. Of course, if it is converted to the relative total capacity of actual charging: 10%*1000u003d100, 100%*200u003d200, the latter's full charge and discharge is still better, but the previous netizen's statement needs to be corrected: in normal Under the circumstances, you should reserve the battery according to the principle of recharging when the remaining power of the battery is used up. However, if your battery is not likely to last the entire day on the second day, you should start charging in time. Of course, if you are willing to carry it. It's another matter of bringing the charger to the office. The principle of recharging the remaining battery power is not to make you go to extremes. As with long charging, a widely circulated saying is to use up the battery as much as possible. This approach is actually only done on nickel batteries, the purpose is to guard against the occurrence of memory effects, unfortunately, it has also been circulated on lithium batteries to this day. There was an example where someone used the phone battery to shut down automatically after the warning appeared because of the low battery. As a result, the mobile phone in this example did not respond during subsequent charging and booting, and had to be sent to customer service for overhaul. This is actually caused by the battery's low voltage due to over-discharge, so that it does not have normal charging and starting conditions. Do not charge the mobile phone lithium battery too full or use it to the point of no electricity. Charge the battery before it is used up. It will not cause damage to the battery. Charging should be within 2-3 hours, not necessarily overflowing. But every 3-4 months or so, the lithium battery should be fully charged 1-2 times (normal charging time) and discharged. Lithium batteries that have not been used for a long time should be stored in a cool and dry place, in a half-charged state (70-80% of the full charge, if your mobile phone displays 4 cells when it is fully charged, then 3 cells are sufficient). Fully charged storage is dangerous and the battery will be damaged, and the battery will be destroyed if stored without power. Every 3--6 months, check if you need to recharge. Lithium batteries can be divided into liquid lithium batteries and polymer lithium batteries according to the electrolyte. The electrolyte of polymer lithium batteries is colloidal and will not flow, so there is no leakage problem and it is safer. Disclaimer: Some pictures and content of articles published on this site are from the Internet. 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