Can I ask when this battery was last reset as I believe that it should be done when it reaches 20 charge cycles.
Phantom 3P falls out of sky
- Thread starter JHammy123
- Start date
I was watching my voltage at 30% charge after flying from a fully charged battery and it never went below 3.5 V per cell, even at full throttle. I think the issue is isolated to flying on a not recently charged battery...
I happen to believe it may be coupled with flying on a battery that has just started the discharge mode, making the voltage sensing go nutty somehow. It's just a guess on my behalf, but there seems to be a pattern of what you're saying, and it might have to do with the discharge routine. I'd have a lot more confidence in my Phantom if DJI would guarantee the new 1.6 firmware CANNOT shut off power during flight, under ANY circumstance. That power shut scheme they implemented is really whacked, and they haven't stated it has been removed. Everyone is still a little paranoid, and we shouldn't have to be. Logically you should be able to fly 5min on a 60% charged battery, but we all know (most of us) that's looking for trouble if you do that with a Phantom 3.
FlyNFrank, have you tested 1.6 to see if taking off on 60% charged battery, starting from off, is safe to fly until the battery meter says 30%? If you have tested the battery reliability of 1.6 firmware, can you share what you have done for testing?
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I agree the phantom should never shut off.
From my posts before and work with lipo batteries the results of the test you describe will vary. For example, if you charge a battery up to 100% and fly it down to 60% and turn if off for 5 min and then turn it back on, it may read higher than 60% but I am pretty confident you could fly safely to 30%. If you let 5 days go by it may read even higher and I would definitely not do it. I just flew two battery downs to 28 and 23. I will check what they read tonight just before charging them. I bet it will be higher....if I waited longer it may go as high as 70%
On the motors shutting off there could be more information we do not know that may make sense...it just seems pretty foolish to me to do it only to protect the battery....
So after 4 hours the battery that was at 23% at landing read 20%....kind of surprised me. I think longer time span is required.m to create the error...
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This is exactly what I do. I keep an eye on the voltage and if it looks like it's getting anywhere near 3.0v under load, I stop applying full throttle.
I fly full throttle and like to spin mine around like a sports car.
I never even knew you could monitor the battery voltage. let alone know that the unit shuts off if it dips under 3V
They need more clarity for sure.
I never even knew you could monitor the battery voltage. let alone know that the unit shuts off if it dips under 3V
They need more clarity for sure.
Since DJI is exhibiting at CES this week I'll be quizzing them on this issue. Hopefully I can learn something. They need to provide more detail about the before and after routines to prevent battery damage. If they would simply tell me it's impossible to have automatic power shutdown under any circumstance during flight I'd be happy. I'm OK with power shutdown of the battery if it's not flying.
If you need a repair shop check out ALLTRONIX at 260-498
if you need a repair shop call ALLTRONIX at 270-498-6892
I'm using Dashware.
Here is a thread where you can find the DAT converter and profile to use in Dashware
P3A/P Dashware profile for for Dat Files | DJI Phantom Forum
Here is a short overview of some analysis you can do:
If enough interest I can do a video tutorial but I think the above link should be clear as the zip files include written instructions.
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