![]() ![]() ![]() Also many drone batteries are created from multiple cells and you don't always know the exact voltage of each cell. If this sag causes the battery cell to go below 3.2v, it will cause more damage. You might ask, why not fly until they are all the way down to 3.2v? Well, you can, but that puts additional strain on the batteries, shortens their life a little bit, and typically when you fly and give the drone a burst of throttle, the battery will sag and the voltage will drop as it tries to provide all the power it can. Normally you will start with a battery cell that is at storage charge or 3.8v, place it on the charger, let the charger charge the battery to 4.2v, then go fly until the battery cell voltage drops to somewhere in the 3.5v to 3.7v range depending on how nice you want to be to your batteries and your comfort level. Any higher than 4.2v and you significantly increase the risk of a battery bursting into flames. Any lower than 3.2v and the battery may be permanently damaged. The usable voltage range for a standard lipo battery cell is 3.2v to 4.2v. This is also why it is important to charge or discharge your batteries back to storage voltage shortly after using them. Any more or less energy in the cell will cause the battery to slowly degrade and lose efficiency. The reason for this is that a lipo battery is most stable at that voltage. (Don't worry if you are unfamiliar with battery cells, we will get more into that later). Storage voltage is where each cell is charged to approximately 3.8 volts. This partial charge is called the Storage Voltage. When you get a new lipo battery it will already come partially charged. That way you will know when it is time to land and keep your batteries healthy. If you drain too much energy out of a lipo battery or put too much in, you will permanently damage it or potentially cause a fire, which is why it is very important to keep an eye on the energy left in your battery as you fly. The first thing you need to know about lipo batteries is that they are not like other batteries you may be familiar with. ![]()
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