Six maintenance rules for drone lithium batteries

　　The battery is one of the key factors to ensure that the drone can take off normally. How to increase its service life is a question that every drone owner should ponder.

　　Both drone batteries and mobile phone batteries are lithium batteries, which are the power source of the equipment and have higher requirements for their safety performance. However, there are differences between the two. Compared with mobile phone batteries, drone batteries have a significant feature - discharge. The drone battery needs to be discharged to meet the requirements of the drone in different environments, such as aerial photography. If there is a strong wind, the battery needs to be able to discharge a large current to make corresponding compensation to ensure the position of the drone. Because of different usage requirements, drone batteries have relatively short lifespans.

　　Six maintenance rules for drone lithium batteries:

　　1. Don't let it go

　　The discharge curve of the battery shows that at the beginning of discharge, the voltage drop is relatively fast, but when it is discharged between 3.9~3.7V, the voltage drop is not fast. But once it drops to 3.7V, the voltage drop will speed up, and if the control is not good, it will lead to over-discharge, which will damage the battery at light level, and cause the machine to explode if the voltage is too low. Some model friends will over-discharge every time because there are few batteries, and such batteries are very short-lived. The strategy is to fly as little as possible for one minute, and the lifespan will be one more cycle. It is better to buy two more 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.

　　Second, not charging

　　2.1. Use a dedicated charger. This charger can be a Li-Ion or Li-Polymer dedicated charger, the two are very close. Some mobile phone chargers can be used to charge lithium polymer batteries. This will not damage the battery.

　　2.2. Accurately set the number of battery cells in the battery pack. For the first few minutes of charging you have to look closely at the charger's display, which shows the number of cells in the battery pack. If you don't know, you shouldn't charge or use a charger you're familiar with.

　　2.3. Charge a new lithium battery pack for the first time, check the voltage of each battery cell in the battery pack, and do the same work every 10 times of charging and discharging. Doing this is absolutely necessary, a battery pack with unbalanced voltages will still burst when the correct number of cells are chosen to charge. If the cell voltages in the battery pack differ by more than 0.1 volts, you should charge each cell separately to 4.2 volts to make them equal. If the voltage difference of the battery cells exceeds 0.1 volts after each discharge, it means that your battery has failed and should be replaced.

　　2.4. Don't charge when unattended

　　2.5. Use a safe location to place charged batteries and chargers.

　　2.6. Generally, there is no special instruction from the manufacturer, and the charging current should not exceed 1C. Batteries that now support high current discharge also support current charging over 1C. But it will greatly shorten the life of the battery, and it is more cost-effective to buy 3 batteries to charge alternately than to buy one battery and have to fast charge.

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