Introduce the safe use of lithium-ion batteries for drone aerial photography

In the lithium battery for airplane model, the single-chip battery voltage 3.7V is the rated voltage, which is obtained from the average working voltage. The actual voltage of a single-chip lithium battery is 2.75~4.2V, and the capacity of the lithium battery is the amount of electricity obtained by discharging 4.2V to 2.75V. Lithium batteries must be used within the voltage range of 2.75~4.2V. If the voltage is lower than 2.75V, it is an over-discharge. The lithium battery will expand and the internal chemical liquid will crystallize. These crystals may pierce the internal structure layer and cause a short circuit, or even make the lithium battery voltage zero. When the single-chip voltage is higher than 4.2V during charging, it is an overcharge. The internal chemical reaction is too intense, and the lithium battery will swell and expand. If it continues to charge, it will expand and burn. Therefore, you must use a regular charger that meets the safety standards to charge the battery. At the same time, it is strictly forbidden to modify the charger privately, which may cause very serious consequences! One more reminder, remember that you can’t use the single-chip battery voltage for aerial photography to 2.75V. At this time, the battery can no longer supply the aircraft with effective power for flight. For safe flight, you can set the single-chip alarm voltage to 3.6V. At this voltage, or close to this voltage, the pilot must immediately perform a return or landing action to prevent the bombing of the aircraft due to insufficient battery voltage as much as possible. Why is the model airplane battery bulging, how to repair it after bulging, and how to judge whether it can be repaired? Generally speaking, the model aircraft battery cannot be used after it is bulged. This is usually the case if there is no matching charging device. In fact, using an active balanced charger, the model aircraft battery can still be used after it is bulged. But it must be slightly different from a normal battery. Because the capacity has been inconsistent. The discharge capacity of the battery is expressed in multiples (C), which means the maximum discharge current that can be achieved according to the nominal capacity of the battery. Common aerial photography batteries include 15C, 20C, 25C or higher C-number batteries. As for the C number, simply put, 1C is different for different capacity batteries. 1C means that the battery can continue to work for 1 hour when discharged at a discharge rate of 1C. Example: If a battery with a capacity of 10000mAh continues to work for 1 hour, the average current is 10000mAh, which is 10A, and 10A is the battery's 1C. If the battery is marked with 10000mAh25C, then the maximum discharge current is 10A×25u003d250A. If it is 15C, then the maximum discharge current is 10A×15u003d150A. It can be seen from this that the higher the C number is when the aircraft is flying in high dynamics. The battery can supply more current support according to the moment of power consumption, and its discharge performance will be better. Of course, the higher the C number, the higher the battery price. It should be noted here that do not exceed the discharge C number of the battery to discharge, otherwise the battery may be scrapped or burned and exploded. 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 article: Why does the battery capacity decrease?