ICDroneSE
lvl.4
Flight distance : 622575 ft
United States
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I've owned a number of DJI drones and have spent countless hours in the past couple years learning the ins and outs of the drones, and I've got to say that one of the most important things is definitely battery management. It's so easy to overlook but could be fatal in the future. So for any new users who have picked up the MA2 or will pick it up as their first drone, this is for you!
First of all, the batteries are intelligent, meaning that they will regulate all cell voltages and discharge in 5 days to around 65% if unused. This is done to improve battery health as storing a battery with 100% for a long time isn't good for it. It could cause swelling and decreased capacity.
The main thing that YOU have to do as a pilot, in my opinion, is this:
1. Never fly beyond the operating range of temperatures. If you haven't noticed, the batteries get really hot after a flight and if you think you can push it by a couple of degrees, just don't The battery temp when you take it out will probably increase by 2 or 3 times that amount since the heat sink on the drone can radiate so much heat. Similarly....
2. Don't fly with warm batteries. Fly with room temperature batteries. You don't want to risk overheating the drone/battery. This means that you should not charge a battery and immediately put it in the drone and take it up. No matter how cold it is (unless it's like close to freezing), your battery will only increase in temperature during flight.
3. Never charge batteries immediately after a flight. Notice how batteries warm up after a charge? You want to wait until the batteries reach room temperature before charging. And remember, even if the outside is cool to the touch, the inside might still be warm. I would recommend a good 1 hour at least before you charge up your batteries.
4. If you don't plan to use a battery within 1-2 days, I would recommend charging it to 50%. No swelling and in case you don't fly it for longer, you won't have to worry about it. Furthermore, you can just top it off to 100% the morning or night before you want to fly, and since you're only charging it for 50%, the battery won't heat up as much.
So why is this important?
Battery swelling. I've done a bunch of research and watched videos of Mavic batteries becoming unusable after it starts to swell, causing it to pop out before flight, or god forbid mid-flight. These batteries are rated for 200 cycles, and you wouldn't want to not be able to use them after 70-80 cycles.
If you want to check this yourself, you can actually place a battery at room temperature at 50% charge on a desk, with the info (black label) side down. It sits flush with the table and does not wobble at all. Immediately after charging, try to do the same thing. Since the batteries are new, it's obviously not bad at all, but if you're careful, you should be able to feel a difference. It'll have a tiny tiny tiny bit of wobble. This comes from the heat and having a full charge, expanding the cells.
If any information I have here is wrong, let me know! Otherwise, fly safe!
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