1. Do not overcharge
There are requirements regarding the charger. Some chargers have inadequate power-off functions after full charge. Therefore, lithium polymer batteries must be supervised while charging. If the charging time is found to be excessive, the charger should be manually checked for malfunctions. If a malfunction is found, the battery should be disconnected as soon as possible. Otherwise, overcharging of lithium polymer batteries can, at best, shorten battery life, and at worst, cause an explosion or fire. Additionally, please remember to charge according to the battery's specified C-rate or a lower one, and never exceed the specified charging current.
2. Do not release
The battery discharge curve shows that the voltage drops rapidly at the beginning of discharge, but slows down between 3.9 and 3.7V. However, once it drops below 3.7V, the voltage drop rate accelerates, and improper control can lead to over-discharge. This can damage the drone's lithium-ion battery or even cause a crash due to excessively low voltage. Some drone operators, due to limited batteries, over-discharge every time they fly, resulting in a very short battery life. The strategy is to fly for as little as possible, thus extending the battery's lifespan by one more cycle. It's better to buy two extra lithium-ion batteries than to fly them beyond their capacity limit each time. Make full use of the battery alarm; land as soon as it sounds.
3. Store without fully charging.
Fully charged lithium-ion batteries should not be stored at full charge for more than 3 days. If left uncharged for more than a week, some batteries will bulge, while others may not bulge immediately, but repeated full-charge storage may render them unusable. Therefore, the correct method is to charge the battery only after receiving a flight assignment. If there are no flight assignments within 3 days after use, charge each cell to 3.80~3.90V before storage. Even if a fully charged battery is not used for any reason, it should still be discharged to 3.80~3.90V within 3 days before storage. If the battery will not be used within three months, perform a charge-discharge cycle before storage to extend its lifespan. Batteries should be stored in a cool, dark environment. For long-term storage, it is best to place them in a sealed bag or a sealed explosion-proof box. The recommended ambient temperature is 10~25°C, and the environment should be dry and free of corrosive gases.
4. Does not damage the outer skin
The outer casing of a drone's lithium-ion battery is a crucial structure preventing battery explosions, leaks, and fires. Damage to the aluminum-plastic casing of a lithium polymer battery can directly lead to a fire or explosion. Batteries should be handled with care, and cable ties should be tightened securely when securing them on the aircraft. During high-dynamic flight or crashes, the battery may be thrown out due to loose cable ties, easily causing damage to the lithium-ion battery casing.
5. No short circuit
This situation often occurs during the maintenance and transportation of lithium-ion battery wires. A short circuit can directly cause the battery to spark or explode. When a broken wire is found in a battery after a period of use and needs to be re-soldered, special care must be taken to ensure that the soldering iron does not touch both the positive and negative terminals of the battery at the same time.
