Why are drone batteries expensive?

This is because the polymer lithium battery used in the drone is different from the 18650 battery used in the power bank. The reason why the price is much more expensive is that compared with other digital devices, drones have stricter requirements on batteries, so the price has to rise sharply. In terms of performance, drones have to overcome their own gravity to do work. Therefore, the weight requirements of the battery are higher, and increasing the battery capacity will lead to an increase in weight. Therefore, there are only light-weight polymer lithium batteries with the same capacity. Can meet the demand; on the other hand, drones have extremely high requirements on battery power. When the throttle is quickly increased from hovering to the highest speed, the battery power will increase rapidly, and the power will increase several times in a short time. This power Changes can only be met by polymer lithium batteries. In fact, 18650 batteries can also meet this requirement through series and parallel connections. Tesla's batteries are more than 7,000 18650 batteries connected in series and parallel, so as to withstand the instantaneous high-power demand, which is clearly not suitable for drones. Therefore, in terms of performance, only polymer lithium batteries can meet this demand. Of course, even the polymer lithium battery wears very quickly on the drone. A 5800mah battery can only support 30 minutes of flight time. It can be imagined how much pressure is on the battery. The polymer lithium battery has been in this working environment for a long time. The battery wears out very quickly, and the rapid discharge in a short period of time will also cause the battery temperature to rise rapidly, which makes the drone battery need further safety protection. Therefore, whether it is from a performance or safety point of view, the battery requirements used by drones are higher than the 18650 batteries used in general power banks, which also makes them expensive. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What to pay attention to when charging UPS battery