How to use and maintain the model aircraft battery

Most of the aeromodelling batteries are lithium-ion batteries. Judging from the discharge curve of the lithium-ion battery, the voltage drops relatively fast when it first discharges, but when the discharge reaches between 3.9V and 3.7V, the voltage drops slowly. But once it drops to 3.7V, the voltage drop will speed up. Poor control will lead to over-discharge, which can damage the battery in the slightest, and cause a bomber if the voltage is too low. Therefore, the model friends who have used the battery to the end, please self-reflection. So usually keep a few more batteries by your side. When the battery starts to alarm, you should land as soon as possible to change the battery. The correct way to protect the model aircraft battery is not to fly the battery to exceed the capacity limit. The discharge current must not exceed the maximum discharge current specified in the specification (approval). Excessive current discharge will cause a sharp decrease in capacity and cause the battery to overheat and expand. The battery must be discharged within the operating temperature range specified in the specification. When the battery surface temperature exceeds 70C, temporarily stop using it until the battery cools to room temperature. Over-discharge will cause damage to the battery, and the voltage of the single battery must not be lower than 3.6V during discharge. However, there are requirements for charging the charger. Some chargers have imperfect power-off function after being fully charged, which causes the monolithic battery to be fully charged to 4.2V and has not stopped charging. In addition, after some chargers have been used for a period of time, because of the aging of the components, It is also prone to the problem of non-stop charging. Therefore, the lithium ion battery must be watched when charging. When the charging time is found to be too long, manually check whether the charger is malfunctioning. If there is a malfunction, unplug the battery as soon as possible, otherwise the lithium ion battery If the ion battery is overcharged, it will affect the battery life at least, but it will explode and catch fire. The charging current must not exceed the maximum charging current specified in the specification (usually 0.5~1.0C or below). Charging with a current higher than the recommended current may cause problems with the battery’s charging and discharging performance, mechanical performance and safety performance, and may Causes heat or leakage. It is recommended not to use 5C charging frequently for the 5C current charging model airplane batteries currently on the market, so as not to affect the battery life. The charging voltage shall not exceed the specified limit voltage (4.2V/single battery), 4.25V is the highest limit of the charging voltage for each cell. (It is strictly forbidden to use direct charging, otherwise it may cause the battery to be overcharged, and the user will be responsible for the consequences due to incorrect use of the battery). The battery must be charged within the ambient temperature range specified in the product specification, otherwise the battery is easily damaged. When the surface temperature of the battery is found to be abnormal (referring to the surface temperature of the battery exceeds 50C), the charging should be stopped immediately. Correctly connect the positive and negative terminals of the battery, and reverse charging is strictly prohibited. If the positive and negative poles are connected reversely, the battery cannot be charged. Reverse charging will damage the battery and even cause heat, leakage, or fire. How to maintain? The outer skin of the battery is used for protection of the battery cell. It is an important structure to prevent the battery from exploding and catching fire at night. So try to prevent scratching the battery skin. The battery should be handled with care, and the cable tie should be tightened when fixing the battery on the airplane. Because there is a possibility that the battery will be thrown out due to the tightness of the tie when flying in a big dynamic flight or crashing, which will easily cause damage to the battery skin. While protecting the outer skin, it is also necessary to prevent the short circuit of the battery. Battery short-circuits often occur during welding wire maintenance and transportation. Therefore, when you find that the battery is disconnected after a period of use, and you need to re-weld the wires, pay special attention 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 the batteries, the best way is to put the batteries in a ziplock bag separately and put them in an explosion-proof box to prevent the positive and negative electrodes of a battery from touching other batteries due to bumps and collisions during transportation. Conductive substance short-circuits or breaks the skin and short-circuits. 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: Introduction to the advantages of liquid lithium ion batteries and polymer lithium ion batteries