P2 will force land and red flash after start
5343 9 2017-5-3
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aarbc56
New

Germany
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Hey

I bought a used Phantom 2 (working completely fine, it was demonstrated to me and I flew it personally), and now I'm having a weird issue:

When starting the P2, I do the calibration dance, set the P2 on a flat surface, wait for the solid green lights for GPS lock and start.
After going up roughly 2m, the P2 will start to quickly flash the red lights, indicating some kind of error and force land itself very roughly. After I then turn off the motors, the green lights will go back on. If I connect it to a Mac using the DJI Apps, no errors show up.

As I'm new to the Phantom ecosystem, I might overlook something trivial, though phone support from the seller didn't bring up any issues. Recalibrating the controller and the Phantom itself does not change anything. Going through the usual Google Search and Forum searches only brought up cases, where a simple compass calibration fixed the issues, but this is not the case with mine. Maybe some of you experts here had the same problem/already know the solution..

If it matters, the Phantom is equipped with H3-3D Gimbal and a Gropro Hero 3 Black.

Hope someone can help me fix this and that this is not an obvious problem solved already a hundred times..

Greetings
2017-5-3
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Mark The Droner
First Officer
Flight distance : 2917 ft
United States
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Hi,

Fast red flashes of the lamps in the rear indicate critical battery and auto land.  

http://dl.djicdn.com/downloads/p ... _Manual_v1.4_en.pdf

Sounds like a bad battery.  
2017-5-3
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aarbc56
New

Germany
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Hm.. the DJI App says the battery is just fine.. It has only 12 full charges 98% of its capacity.
2017-5-6
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Mark The Droner
First Officer
Flight distance : 2917 ft
United States
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Those numbers are referring to the life of the battery not the health of the battery.  How was the cell balance?

I recommend you buy a new legit DJI battery, charge it up, and try to fly.  I think you'll be pleasantly surprised.  
2017-5-7
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aarbc56
New

Germany
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I ordered a brand new battery - I'll report back if this fixes the problem!
2017-5-8
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aarbc56
New

Germany
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So, after the battery arrived and I tested it: It works!
Still weird, that the battery died from one moment to another though..
Thank you anyway!
2017-5-27
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DJI-Jamie
DJI team
Flight distance : 112405 ft
United States
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aarbc56 Posted at 2017-5-27 05:10
So, after the battery arrived and I tested it: It works!
Still weird, that the battery died from one moment to another though..
Thank you anyway!

Good to hear you were able to find the root of the issue. Do you happen to know how old that initial battery was?
2017-5-27
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fans1ffc0edf
lvl.1

Spain
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Hi.
The same thing happens to me with two original DJI batteries. They do not have more than 11 charges one of them and the other 12 charges.
Either way, it's the same for me.
Charged at 100% one of them at the first minute of flight flashes red quickly and descends at full speed to the ground. And the other does the same but two minutes of flight. The DJI application of the PC does not give me errors in the batteries.
What can be?
2017-5-28
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Mark The Droner
First Officer
Flight distance : 2917 ft
United States
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Ahh, Flytrex.  I'm an avid fan, even if they don't answer their emails...
2017-5-28
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fans1ffc0edf
lvl.1

Spain
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hi.

My batteries are relatively new, as I say, only one has 11 charges and the other 12 charges.
How can they deteriorate if I take care not to leave them 100% charged?
2017-5-28
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