Battery auto discharge feature

Joined
Sep 30, 2016
Messages
103
Reaction score
20
Location
East Tn
Ok, have the latest firmware, all three batteries are up to date but for whatever reason my packs don't seem to be auto discharging. I have mine set to discharge after 2 days and I read in the manual that it will take them down to less than 65% and takes about 2 days to accomplish. I've waiting 5 days now and not seeing this. When I go in and check to see if there is another setting or switch to slide over in the app I don't see anything and even when I look at the history I only see one auto discharge which is the 2nd one, probably coming from the factory on all three. Am I missing something here?
 

msinger

Approved Vendor
Joined
Oct 30, 2014
Messages
31,682
Reaction score
10,661
Location
Harrisburg, PA (US)
Website
PhantomHelp.com
I've waiting 5 days now and not seeing this.
How exactly are you attempting to see it? Did you press the button on the battery at anytime during those 5 days?
 
Joined
Sep 30, 2016
Messages
103
Reaction score
20
Location
East Tn
I did press the battery once to see the green led status and still had 4 bars. I then installed them into the quad, plugged my radio in the controller to pull up the app and see the actual percentage, very little change perhaps 10-12%. Is there another or better way to do this? I tried looking thru the manual but didn't see much info on it.
 

msinger

Approved Vendor
Joined
Oct 30, 2014
Messages
31,682
Reaction score
10,661
Location
Harrisburg, PA (US)
Website
PhantomHelp.com
Pressing the battery button restarts the 2-day waiting period. Perhaps that's what happened.
 
Joined
Jan 1, 2016
Messages
841
Reaction score
216
Age
68
Location
Ontario, Canada
No peeking. It resets the countdown timer.
 
  • Like
Reactions: Opfor
Joined
Sep 30, 2016
Messages
103
Reaction score
20
Location
East Tn
ahhh....that has to be it. Is this in the manual, did I just miss it? I truly try to find my answers on my own first but come here when I can't come up with. Always appreciate the fast helpful answers here from you guys!
 
Joined
Jan 1, 2016
Messages
841
Reaction score
216
Age
68
Location
Ontario, Canada
Likely one of DJI's undocumented features.:confused:
 
  • Like
Reactions: Opfor

msinger

Approved Vendor
Joined
Oct 30, 2014
Messages
31,682
Reaction score
10,661
Location
Harrisburg, PA (US)
Website
PhantomHelp.com

alokbhargava

Premium Pilot
Joined
Sep 28, 2015
Messages
6,943
Reaction score
2,325
Location
San Francisco, CA
It is there somewhere in the DJI writeup, I remember having read it.


Sent from my iPhone using PhantomPilots
 
Joined
Jul 20, 2016
Messages
1
Reaction score
0
Age
68
Where is the auto self discharge officially discussed by DJI? It sounds like a very risky "feature". It is not a good idea to have an unattended load event. It has been said that this is to protect the life of the battery. Again where is this documented? Cell life is rated in charge-discharge cycles which this process is negatively affecting. I bet it is more intended to make the Coulomb counter fuel guage more accurate for the flyer as self discharge won't figure in the count.
There are shipping regulations that declare how high the state of charge can be too.
 

msinger

Approved Vendor
Joined
Oct 30, 2014
Messages
31,682
Reaction score
10,661
Location
Harrisburg, PA (US)
Website
PhantomHelp.com
Joined
Apr 30, 2016
Messages
92
Reaction score
25
Age
68
Location
MS and ID
So if I read that correctly, it takes 13 days for the battery to self discharge below 65%. It starts the auto discharge when it has sat unused for 10 days then it takes 3 days to complete the discharge. Do I have that correct?
 

msinger

Approved Vendor
Joined
Oct 30, 2014
Messages
31,682
Reaction score
10,661
Location
Harrisburg, PA (US)
Website
PhantomHelp.com
That's correct -- if the battery is fully charged. If it's closer to 65% charged when the battery starts to auto discharge, it won't take 3 days to discharge down to 65%.

10 days is the default setting. You can change that in the following section of DJI GO:

DJI-GO-Battery-Time-To-Discharge.jpg
 
Joined
Dec 19, 2016
Messages
90
Reaction score
35
Location
Brighton, England
Old thread but worth asking here is worth the try - This feature, I have it set to 10 days, will it gradually discharge or will it dump it all on day 10? I can't seem to find the answer anywhere with ease...
 

msinger

Approved Vendor
Joined
Oct 30, 2014
Messages
31,682
Reaction score
10,661
Location
Harrisburg, PA (US)
Website
PhantomHelp.com
[QUOTE="thefrisbee995, post: 1022435, member: 79685"I have it set to 10 days, will it gradually discharge or will it dump it all on day 10?[/QUOTE]
The battery will start to auto discharge after 10 days. It could take up to 2-3 additional days for the battery to be discharged down to 65%. It really depends on what level the battery is at when the discharge process starts.
 
  • Like
Reactions: thefrisbee995
Joined
Aug 24, 2017
Messages
1
Reaction score
0
I have the same problem as mentioned in the 1st post with my Phantom 4 Pro+:

Auto discharge set to 10 days (default)

Checked after 15 days (even more) and both bats are still at approx. full charge (4 green leds - not checked via app)

Am I missing something?

Stupid question: Should the bat be fitted to the drone to discharge? (I store by bats disconnected from the drone)
 

ianzone

**P4**
Joined
May 22, 2016
Messages
7,333
Reaction score
4,972
Age
52
Location
NZ
I have the same problem as mentioned in the 1st post with my Phantom 4 Pro+:

Auto discharge set to 10 days (default)

Checked after 15 days (even more) and both bats are still at approx. full charge (4 green leds - not checked via app)

Am I missing something?

Stupid question: Should the bat be fitted to the drone to discharge? (I store by bats disconnected from the drone)
My p4 on 10 day aswell but dont do nothin,me p3 range does ,,never looked into it ,i notice me remote runs down not me p4 batt,if i gona discharge i just fly ,:)
 

msinger

Approved Vendor
Joined
Oct 30, 2014
Messages
31,682
Reaction score
10,661
Location
Harrisburg, PA (US)
Website
PhantomHelp.com
Should the bat be fitted to the drone to discharge?
The battery should auto discharge whether or not it's installed in your Phantom.
 
Joined
Jun 1, 2016
Messages
170
Reaction score
61
Age
63
I have the same problem as mentioned in the 1st post with my Phantom 4 Pro+:

Auto discharge set to 10 days (default)

Checked after 15 days (even more) and both bats are still at approx. full charge (4 green leds - not checked via app)

Am I missing something?

Stupid question: Should the bat be fitted to the drone to discharge? (I store by bats disconnected from the drone)

At any time during the 15 days did you press the power button? I've heard elsewhere on this forum that pressing the button counts as use, and will reset the countdown.
 
Last edited:

Members online

Forum statistics

Threads
142,049
Messages
1,460,297
Members
103,829
Latest member
fbvh