Battery Percentage Rapid Drop

[Rugby96]

I'm new here but have been reading alot and learned alot from all the posts. I went to fly my P3P today and when I turned the battery on and looked at GO App the percentage rapidly dropped with the P3P just sitting there not running. It slowed down about 65% and I did power up and flew around a bit watching and it seemed to act normal on the percentage drop while flying.
Any ideas?

 

[soulphantomflyer]

All 4 cel have equal voltage?


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[Rugby96]

Yes all were same the best I remember. I'm gonna pull the data file later tonight and see for sure.

 

[Rugby96]

Checking it right now three cells 3.88 and one 3.87... Percentage is stable..

 

[soulphantomflyer]

Next time you use the quad. Run the battery down to 10% or less, then fully charge it back up. That should reset the smart battery calibration.


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[Rugby96]

I'll give it a shot.. Thanks!

 

[vadajohn13]

I have a related question...I have the P2 Vision + with two batteries. One has performed perfectly but the other started losing power in midflight after about 12 hours of use. I have done the depletion/recharge on both of them as indicated. When I do a diagnostic the readings are comparable for both batteries at full charge, 50% charge, and almost depleted. All three cells on both batteries are similar at each stage. I noticed the problem occurred the first time at 46% charge, the second time at 63% charge, and this last time at 82% charge. I fooled around with it and figured out that the problem happens only when it's under load, i.e., in flight. If I leave it on the ground with the props turning there isn't an issue and the battery seems to discharge normally. Any Ideas?

 

[alokbhargava]

Are you sure your battery didn't enter discharge state?

 

[Rugby96]

alokbhargava, If that was ? towards mine I had just charged it about 2 hours prior to incident..

 

[vadajohn13]

Forgive me for not replying sooner; I'm not sure what you mean by "discharge state." Can you describe this further?