After entering the 21st century, lithium-ion batteries have been widely used in the field of power tools with their excellent characteristics. In this case, lithium battery wrenches, lithium battery hammers, lithium drills and other products are everywhere in the work and life of workers. It is necessary to understand the knowledge of storage and maintenance of lithium batteries. 1. [Preservation of Lithium Battery] 1. The self-discharge of lithium primary battery is very low and can be stored for 3 years. The effect will be better if stored under refrigerated conditions. It is a good way to store lithium primary batteries in a cold place. 2. Lithium-ion batteries can be stored for more than half a year at 20°C. This is due to its low self-discharge rate and most of the capacity can be recovered. 3. The self-discharge phenomenon of lithium batteries, if the battery voltage is kept below 3.6V for a long time, it will cause the battery to over-discharge and destroy the internal structure of the battery and reduce the battery life. Therefore, long-term storage of lithium batteries should be recharged every 3 to 6 months, that is, charged to a voltage of 3.8 to 3.9V (the best storage voltage of lithium batteries is about 3.85V), and it is not suitable to be fully charged. 4. The application temperature range of lithium battery is very wide. It can still be used outdoors in winter in the north, but the capacity will be reduced a lot. If it is returned to room temperature, the capacity can be restored.
2. [Lithium battery maintenance instructions] 1. When charging, it shall not be higher than the maximum charging voltage, and shall not be lower than the minimum working voltage when discharging. 2. Lithium-ion batteries must be kept above the minimum operating voltage at any time. Low voltage over-discharge or self-discharge reaction will cause the decomposition and destruction of lithium ion active materials, which may not necessarily be reduced. 3. Any form of overcharging of lithium ion battery will cause serious damage to battery performance and even explosion. Lithium-ion batteries must avoid overcharging the battery during the charging process. 4. Don't often deep discharge and deep charge. However, after about 30 charging cycles, the power detection chip will automatically perform a deep discharge and deep charge to accurately assess the battery's status. 5. Avoid high temperature, which may shorten the life span, or cause an explosion in severe cases. If possible, it can be stored at a lower temperature. 6. Avoid freezing, but the freezing point of most lithium-ion battery electrolyte solutions is -40°C, which is not easy to freeze. 7. If you do not use it for a long time, please store it with a charge of 40% to 60%. When the battery is too low, it may be over-discharged due to self-discharge. 8. As lithium-ion batteries will naturally age when they are not in use, they should be purchased according to the actual amount required when purchasing, and not too much.