Solution: If your battery is warm, leave it at room temperature for about 30 minutes to 1 hour. Then connect the battery to the charger and plug it. Someone says to put your drone in the freezer if your battery is warm, but I won’t advise it. Because if the drone battery temperature goes below 4° C that also would cause the issue. Reason 4: Faulty or broken charger. Don’t charge the battery when it’s warm. If you just finished a flight, your battery must be warm. So let the battery cool before charging Once you finish the flight. Instead of charging the battery immediately, give it some minutes to cool off. This will protect the battery from overheating while charging and swelling. Store battery at 50% charge. When you store the drone battery, discharge the battery to 50%. Here are some specific advice for storing long term and short term.

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Long-term Storage – If storing for the long term (more than ten days), store the battery between 40 and 60%. If you have a DJI drone or drone with an intelligent battery, it would discharge to 50% by itself and ultimately go into hibernation mode. Which responsible for keeping drone battery safe in long term storing. As I mentioned before there are many sensors are embedded in the battery. So if they detect high amperage which could damage the battery, it would refuse to charge. Higher amperage could be a result of a charger or outlet being faulty. Also if you are using a charger from another electronics it also could cause high amperage. Because of the importance of monitoring the temperature of the battery, a lot of sensors are embedded into the battery. So when the battery is too hot, sensors would detect unsafe charging conditions and refuse to charge and turn on. Because charging the battery would cause heat the battery more.When talking about this issue, we need to focus on not only the battery but also the charger. Because if your charger is a broken or short circuit, it won’t be able to supply sufficient current and voltage to charge the battery. So the drone battery won’t charge. Solution: Many pilots were able to fix this issue by updating the firmware of the drone. So if you also haven’t updated firmware and the “Inconsistent firmware” notification also popping, update the firmware of the drone to the latest. When updating firmware be sure to insert the battery with the issue. because the firmware updating process would solve the bugs in the battery. Reason 2: Battery has gone into hibernation mode. Short-term storage – Batteries should be discharged to between 60-80% if you’re not using them for between one and ten days. It would keep the battery safe without getting damaged. If you have stored the battery for the long term and trying to charge it again and it won’t charge, the drone battery might have gone into hibernation mode. Hibernation mode is designed by engineers to keep the drone battery safe and last longer. So if you store the battery for long, it would discharge 50% and go into hibernation mode.

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Drone batteries are Lithium polymer batteries and they are sensitive to huge temperature differences. Because huge temperature differences affect the reactions of the battery and damage the battery. The temperature range between 5 – 40° C is the optimum range for Lithium polymer battery reactions. If you have left your drone in a warm closed area like inside a car, and facing this issue this would be the reason for that. If your battery is swollen, it’s the nightmare of the battery issues. Stop using swollen batteries as soon as possible. Because swollen batteries are so dangerous and can explode at any time. Especially there is any action with the battery like charging. To keep the battery healthy, you need to practice good habits with battery maintenance and using it. Here are some habits to practice and keep batteries safe. Those practices would prevent from this kind of issues. Tips to Keep drone battery cells healthy. In most cases, the drone battery not charging because of high or low battery temperature or a faulty charger. Also, outdated firmware, damaged battery cells, and high amperage could cause this issue. If you have stored your battery for a long time and facing this issue, the battery might have gone into hibernation mode.According to that, there are many reasons and situations that could cause this issue. We would talk about almost every reason and solution for it below. Most of them are so easy to solve like just by performing software operations while some of them are going to cost you money and effort. Reason 1: Outdated firmware or firmware glitches.

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Also, select the output voltage which matches the LiPo battery’s nominal voltage. Once the battery is charged 3.3V per cell, move the battery to the Lithium Polymer balance charger and balance the charge at 0.5C. After balancing the charge, the battery would recover successfully and work normally. Reason 6: High amperage.