Really? Where did you get this information? Doubtful.The batteries are designed to separate from the craft on a crash to avoid a fire that would engulf the quad but maybe DJI should rethink that.
Really? Where did you get this information? Doubtful.The batteries are designed to separate from the craft on a crash to avoid a fire that would engulf the quad but maybe DJI should rethink that.
One only has to do a quick search to discover a trend on battery ejections due to even minor crashes. I seem to remember a DJI moderator mentioning this as a safety design. See the link below:Really? Where did you get this information? Doubtful.
There are no DJI moderators here. As to what you might read on the DJI forum you need to exercise caution as to what extent you rely on it. I doubt it is a safety function. If the LiPO cells are going to cause a hazard following an impact or other failure being seperated from the drone is very unlikely to mitigate the danger or consequences.One only has to do a quick search to discover a trend on battery ejections due to even minor crashes. I seem to remember a DJI moderator mentioning this as a safety design. See the link below:
Have you CRASHED? Did your battery fall out?
Key words there are "I doubt". I would encourage you to investigate. The DJI moderators I referenced are from DJI'S own forums of which I'm a member of.There are no DJI moderators here. As to what you might read on the DJI forum you need to exercise caution as to what extent you rely on it. I doubt it is a safety function. If the LiPO cells are going to cause a hazard following an impact or other failure being seperated from the drone is very unlikely to mitigate the danger or consequences.
On a similar note, I am a member there as well, however I have found this forum to be much more informative. The moderators on DJI's forums, from the posts I have viewed there are only that. Moderators. They know nothing basically about the aircraft and only reply with "scripted" version answers to any questions. They are relatively useless IMHO. You may feel differently, but this is from my experiences on that end.The DJI moderators I referenced are from DJI'S own forums of which I'm a member of.
I’m not questioning whether you may have read something somewhere- I was interested in the credibility of the source. From my experience any discussion on the DJI forum that serves to evidence a flaw in the design or performance of the products is either met with a poor often nonsensical explanation or the post is deleted.Key words there are "I doubt". I would encourage you to investigate. The DJI moderators I referenced are from DJI'S own forums of which I'm a member of.
The DJI moderators I referenced are from DJI'S own forums of which I'm a member of.
Either way, it is the same result basically. But that is good information to know. Obviously from the data you could possibly tell the difference in that instance. Here is simply a complete shutdown with no intermittence of any in relation to battery power. The logs simply stopped without any indications of any power issues. So in this case I don't think that was the issue, or it would have been seen in the logs. As I said though, that is good info to know.The battery never "dislodged". The battery connection melted down and was fused together upon recovery.
My P4A fell out of the sky the same way. I was getting intermittent 0% battery warnings just prior to crash. The battery never "dislodged". The battery connection melted down and was fused together upon recovery. My opinion is: This is the wrong type of connection for this application. The P3 2 terminal "Beaver Teeth" connection is the only way to go. They saved space in the P4 by combining the power supply bus with the battery connection. This multi-terminal connection won't tolerate any kind of vibration or motion, yet the battery bay still allows battery motion. I got a new bird through DJI Care Refresh and now I check the battery connection with an infrared thermometer after each flight. Temperatures have been 110-122 deg F. depending on ambient temperature. It is, however, the hottest part of the battery, which means heat is coming from the connection. Did you inspect your battery connection for heat damage?
I don't completely discount this theory, because you really can't. However, his incident was a bit different as I mentioned, the intermittent power would have shown in the logs if this were the case. This was not evident. It was an instantaneous disconnect and shut down. A slow meltdown, would have shown deviations in the battery. Below are the cell values for the entire flight. The deviations you see are normal. In the case of intermittency, these would show severe spikes. There were none.NAILED it!
I don't completely discount this theory, because you really can't.
My opinion is: This is the wrong type of connection for this application. The P3 2 terminal "Beaver Teeth" connection is the only way to go. They saved space in the P4 by combining the power supply bus with the battery connection. This multi-terminal connection won't tolerate any kind of vibration or motion, yet the battery bay still allows battery motion.
No problem, clarification is always good.I'm sorry, I strayed from the OP and was commenting on this part of this post:
Just a new approach... Couldn't it be just a battery malfunction, suddenly not delivering power, but yet attached?
If i power on my p4p, and start the motors without props, if i start pulling off the battery it must go out 3-4 mm until it stops. Can hardly believe this can happen due to a hard maneouver.
I have been doing this with white wire ties. It works great with no residual until I can figure something out better. I just cost you one wire ties per flight. It's cheap insurance though.I saw this from a previous post.
I just use some medical tape you can get at the drugstore. It is reusable, holds well to the plastic but doesn't leave a residue, and two small strips on the diagonal add a layer of protection. That, combined with avoiding abrupt maneuvers gives me a little peace of mind when flying.