Someone who is familiar with UAV knows that, taking Dajiang as an example, the price of a piece of more than 5000 milliampere unmanned aerial vehicle (UAV) battery is nearly $1000, and a power bank with 20000 mAh we usually use is just about 100-200 yuan, why is it so different? Isn’t it used longer if using a 20000 mAh power back on the unmanned aerial vehicle (UAV)? This is because the drones Polymer lithium ion batteries and charging treasure adopted18650 battery’s different, the price a lot more expensive, this is because compared to other digital devices, unmanned aerial vehicle (uav) stricter with battery, so the price has soared First performance, the work is done, the gravity of the unmanned aerial vehicle (uav) to overcome their own, therefore, higher requirements for the weight of the battery, and increase the battery capacity will lead to weight gain, therefore, only under the same capacity lighter weight polymer Lithium ion batteries Can satisfy the need, on the other hand, the unmanned aerial vehicle (uav) is extremely high, to the requirement of battery power when the hover state rapidly improve the throttle to the highest speed, battery power will be improved quickly and in a short period of time several times of power, the power change only polymer lithium ion battery can meet, in fact, 18650 batteries by series-parallel can meet such requirements, tesla motors batteries is more than 7000 18650 battery series parallel together, so that they can withstand momentary power demand, this is obviously not suitable for in unmanned aerial vehicle (uav).