There are requirements for chargers. Some chargers are not fully powered after being fully charged. Therefore, someone must take care of the lithium-polymer battery when charging. When it is found that the charging time is too long, it is necessary to manually check whether the charger is faulty. If there is a fault, the battery should be unplugged as soon as possible, otherwise the lithium-polymer battery will be overcharged, which will affect the battery life at light level, or explode and catch fire directly in severe cases. In addition, I remind everyone that when charging, it must be charged according to the specified charging C number of the battery or a lower C number, and the specified charging current cannot be exceeded.
2. Don't let it go
The discharge curve of the battery shows that the voltage drop is relatively fast at the beginning of discharge, but the voltage drop is not fast when it is discharged between 3.9 and 3.7V. However, once it drops to 3.7V, the voltage drop will speed up, and poor control will lead to over-discharge, which will damage the lithium-ion battery of the drone, or cause the drone to explode if the voltage is too low. Some model friends will over-discharge every time they fly because there are fewer batteries, and such batteries are very short-lived. The strategy is to fly as little as possible for one minute, and fly one more cycle in your lifespan. It is better to buy two more lithium-ion batteries than to fly the battery beyond the capacity limit every time. To get the most out of the battery alarm, land as soon as the alarm goes off.
3. Unsatisfactory power saving
A fully charged lithium-ion battery cannot be stored for more than 3 days. If it is not discharged for more than a week, some batteries will bulge directly, and some batteries may not bulge temporarily. scrapped. Therefore, the correct way is to charge the battery after receiving the flight mission. If there is no flight mission within 3 days after the battery is used, please charge the single-chip voltage to 3.80~3.90V and save it. If the battery does not fly due to various reasons after being fully charged, the battery should be discharged to 3.80~3.90V within 3 days after being fully charged. If the battery has not been used within three months, keep the battery after charging and discharging it once, which can prolong the battery life. The battery should be stored in a cool environment. When storing the battery for a long time, it is better to put it in a sealed bag or a sealed explosion box. The recommended ambient temperature is 10~25C, and it is dry and free of corrosive gas.
4. No damage to the outer skin
The outer skin of the lithium-ion battery of the drone is an important structure to prevent the battery from exploding and leaking and causing fire. The damage of the aluminum-plastic outer skin of the lithium-polymer battery will directly cause the battery to catch fire or explode. The battery should be handled with care, and the cable ties should be tightened when securing the battery on the plane. Because there is a possibility that the battery will be thrown out because the strap is not tight when it is in a large dynamic flight or crash, which can easily cause damage to the outer skin of the lithium-ion battery.
5. No short circuit
This often happens during the maintenance and transportation of lithium-ion battery wires. A short circuit will directly cause the battery to catch fire or burst into flames. When it is found that the battery is disconnected after a period of use, it is necessary to re-solder the wire, and special attention should be paid to the electric soldering iron not to touch the positive and negative electrodes of the battery at the same time. In addition, in the process of transporting batteries, the best way is to put each lithium-ion battery in a self-sealing bag and place it in an explosion-proof box to prevent the positive and negative electrodes of a certain battery from being at the same time due to bumps and collisions during transportation. It is short-circuited or broken when it encounters other conductive substances.