1. Use the matching lithium-ion battery charger to charge the battery regularly; do not use low-quality or other types of battery chargers to charge lithium-ion batteries. 2. Lithium-ion batteries have no memory effect and can be charged at any time. But it should be noted that lithium-ion batteries cannot be over-discharged, which will cause irreversible capacity loss. Once the machine issues a warning that the battery is low, it will start charging. 3. In daily use, the newly charged lithium-ion battery should be placed for half an hour and used after the charging performance is stable, otherwise it will affect the battery performance. 4. When the instrument is not in use, be sure to take out the battery and put it in a cool and dry place. 5. Pay attention to the use environment of lithium-ion batteries: the charging temperature of lithium-ion batteries is 0℃~45℃, and the discharge temperature of lithium-ion batteries is -20℃~60℃. 6. Do not mix batteries with metal objects to prevent metal objects from contacting the positive and negative poles of the battery, causing short circuits, damaging the battery or even causing danger. 7. Do not knock, pierce, trample, modify or expose the battery. Do not place the battery in a microwave, high voltage or other environment.8. The newly purchased lithium-ion battery has a small amount of power. Users can use it directly after removing the battery and recharge it after the remaining power is used up. After normal use 2-3 times, the activity of the lithium-ion battery can be fully activated. Warning: Do not believe the rumors from sales staff or the Internet that the new lithium-ion battery needs to be activated for up to 12 hours when used for the first time.