Welcome Mavic Pilot!
Jump in and join our free DJI Mavic community today!
Sign up

Platinum ocean crash.

shb

Well-Known Member
Joined
Jul 4, 2017
Messages
78
Likes
25
#1
Platinum crash ocean.


On Dec 30th, 2018, I was flying my Mavic Pro Platinum in the vicinity of Catbalogan harbor, Samar Philippines. I flew 15 minutes with no problems.6 minutes of that was in tripod mode, because I was flying around people and boats. I noticed the battery was 30%, so I decided to come back
and land. I pressed Return To Home. The Mavic ascended to it's return to home altitude of 260 feet. After that, the remote control disconnected from the drone. I never saw the drone start to come back to me. I moved around hoping to reestablish connection, but it never reconnected. So I gave my wife the remote control, and tablet, and started walking over to the pier where I knew it had been when I lost connection. I asked people if they had seen my drone crash, but no one had. I started walking back to my wife, assuming I would never find it. Then a guy came up to me and pointed to around 15 kids out in the water, and said they were looking for my drone. So I walked to the spot on the pier, as close to them
as I could get. Where they were looking the water was muddy and shallow, around 3 feet deep. After 5 to 10 minutes, one of them found the Mavic and held it up. I signaled to them to bring it to me. When it got close, I could see the battery was missing. I gave the boy who found it 3,000 pesos,
around $60, and the guys who carried it over to me 1,000 pesos. They were very happy! So I carried it back to where my wife and our boat was. On the way I bought 2 liters of drinking water. When I got to my wife, I poured the drinking water on the Mavic hoping to rinse off the salt water.
I noticed one of the motors wouldn't turn, and the gimble wouldn't move left to right(yaw). There was a quarter inch by half inch piece of one propeller broken, but still attached to the rest of the propeller. I saw no other damage. So I took the boat back to my wifes house on Darem Island. There, there is no Internet.
I now go back to September. Originally, I bought a Mavic pro in June 2017. I lost it by pilot error in Dec 2017. I bought a Platinum in Jan 2018. So I had one new Platinum battery and two old Mavic Pro batteries, one of which was the original one that came with my Mavic pro. This was
the battery I was flying with when the Platinum crashed. In September this year, I noticed my Mavic pro batteries wad swollen up on their underside where they attached to the drone. One was so swollen I had to use extra pressure to attach it to the Platinum. But you couldn't pull them off the Platinum without pushing the battery release buttons down. In October I went on a trip to Puerto Galera, Philippines, an
excellent place to fly a drone. I took all three batteries, but I never used the one that was swollen the most. I had about 10 flight with the slightly swollen battery without incident. So when I went to Samar in December I only took the Platinum battery, and the slightly swollen
Original Mavic Pro battery. At my wifes house I made 3 or 4 flights with the swollen battery and had no problems. So I took everything to Catbalogan because they have internet there, and I wanted to get Google Map showing up on my app. I fly with an app I wrote myself
in B4A, not DJI Go 4. After getting the map working at a restaurant with wifi, I decided to fly around the harbor. My swollen battery was already on so I decided to fly with it instead of using my Platinum battery, which was fully charged. The swollen battery was clearly not attached to the drone as tightly as a good battery would of been. So I flew around the harbor. After a while I started to fly in close proximity
to people and boats, so I switched to tripod mode to avoid hitting someone/something. I was in tripod mode around 6 minutes. I recovered the sdcard and all of the video plays. So what I think happened, was the Mavic/battery got hot from reduced air flow, and swelled more and detached from the
Platinum 260 feet in the air.
The day after I got my crashed drone back to my wifes house I filled a plastic container full of drinking water and submerged the Mavic in it for thirty minutes. Then I put it in a Tupperware container with rice for 3 days. On the fourth day I took it out and tried to power up. The platinum turned on, all the motors moved, the gimble moved, although not as much as it usually does, and all the lights came on and
it made the DJI sound. But the remote never connected to the drone, even after several minutes. So I put it away and I will try again later.
Conclusion: So I know everyone is thinking I shouldn't have tried to fly with the swollen battery. Was I stupid? Maybe. I certainly would never try it again. But I took a risk and I lost. In my opinion these original Mavic batteries have a design defect, but all DJI will do is tell you not to use them. They won't replace them, even though they crap out in 18 months.
I'll probably buy another drone, a Mavic 2 or 3, but not right away. I found several good Youtube videos about what to do if you crash in the ocean or get sand in the motors. Here are the links:



I also just posted another thing in the forum about "Repair defective mavic videos" but I can't find the exact link.

Here's the last 45 seconds before the crash. This is the repaired file.


Here's a picture of where it crashed, the red ball. crash location marked.jpg

Steve
 
Last edited:

RayOZ

Well-Known Member
Joined
Nov 16, 2017
Messages
1,024
Likes
875
Loc
Brisbane, Australia
#2
You were pushing your luck using a swollen battery anyway. Batteries don't last forever. It's pretty good if it lasts 18 months. Why would DJI agree to replace old batteries? They expect you to buy new ones. Same with most electronics. You don't expect smartphone manufacturers to agree to replace the battery of your smartphone for free every 2 years, do you?
 

msinger

Well-Known Member
Approved Vendor
Joined
Oct 12, 2016
Messages
17,530
Likes
8,770
Loc
Harrisburg, PA (US)
Site
www.MavicHelp.com
#4
I don't think DJI is supporting the Mavic 3 yet, since it hasn't been tested, or released, or designed, or invented....
Maybe the OP is thinking of waiting a long while before buying a replacement. It could be a while since DJI just released the Mavic 2.
 

HappyHours

Well-Known Member
Joined
Dec 14, 2018
Messages
45
Likes
19
#5
Lipo batteries swell when the charging system does not charge them correctly or they have just been cycled too many times. Trying to use them after they have reached that point is certainly an error in judgement.

They swell because of a build up of gasses in the cell pack and they don’t have a vent.

Be careful out there
 
Last edited:

HappyHours

Well-Known Member
Joined
Dec 14, 2018
Messages
45
Likes
19
#7
I guess I should have said ALL lipos, not just Mavic’s. When I say cell, I’m talking about the individual foil sealed cell.

Good cell -bad cells



 
Last edited:

DanMan32

Well-Known Member
Joined
Sep 1, 2018
Messages
2,045
Likes
626
Age
53
#9
Keeping them in hot environments will also shorten their life.
So will leaving them unattended too long where they have self-discharged too far.

I have my Phantom 3 batteries for 2 years now, still good.
I've not had as good luck with my Syma batteries, but I tended to leave them in the trunk of my car, in months not having an 'r', in Florida.
I didn't do that as much with the P3.
 

Photo Booth

Well-Known Member
Joined
Dec 12, 2017
Messages
200
Likes
188
#10
Pilot error. NEVER fly with a swollen battery. As others have pointed out, a swollen battery is a sign of a BAD battery. Quite dangerous. A swollen battery should not even be stored in the house. Put it in a metal can outdoors and seal the lid until you can dispose of it properly.

What probably happened.... while you were flying with the swollen battery it probably became even more swollen and the bulging finally pushed the battery up out of your Mavic enough to break the electrical connection to the drone. Down she came and the battery was loose enough that it popped right out when the drone hit the ocean.

Definitely pilot error. Be thankful that it hit the ocean and not someone's boat or a car or, worse, a person. A Mavic dropping to the ground from 260 feet could kill someone.

BTW, a Mavic doing a free fall from 260 feet will be going approximately 80 mph when it hits the ground. That figure might be lower if the nonfunctional propellers offer some sort of wind resistance.

Mark
 
Last edited:

timinator

Well-Known Member
Joined
Mar 19, 2018
Messages
57
Likes
22
Age
48
#11
I wouldn't say you were stupid - you just made a poor decision to fly with it. There's definitely an opportunity here for you to improve your airmanship. Always inspect your batteries pre and post flight for damage. Additionally, always fly with a fully charged battery.

I know you said that the remote wouldn't connect to the aircraft but have you tried to go through the pairing process to see if it will link up again?
 

BobDoLe

Well-Known Member
Joined
Oct 2, 2018
Messages
76
Likes
36
Age
91
#12
yeah, don't kick yourself. a used mavic pro is relatively dirt cheap now that they dropped the price yet again (and even lowered mavic 2 pricing).
if you have a bunch of mavic pro accessories (and a few batteries), then might as well just buy a used mavic pro.
it has been about 15 years, but i've actually been to that area and i am guessing it is not easy to acquire another drone. I'd probably have a backup and 20 pairs of propellers in a safe or something.

can you share any videos of the area? i'd love to go back there with a drone someday.
 

53-63-6f-74-74

Well-Known Member
Joined
Sep 24, 2017
Messages
425
Likes
303
Age
46
Loc
Earth
#13
That was a lot to read. I should have just jumped to the "conclusion" to learn not to fly in close proximity to humans with an obviously defective battery that you had to force into the aircraft when it didn't fit correctly. Next time I'll start reading these posts backwards.
 

BobDoLe

Well-Known Member
Joined
Oct 2, 2018
Messages
76
Likes
36
Age
91
#14
That was a lot to read. I should have just jumped to the "conclusion" to learn not to fly in close proximity to humans with an obviously defective battery that you had to force into the aircraft when it didn't fit correctly. Next time I'll start reading these posts backwards.
scott,
77 68 61 74 20 6b 69 6e 64 20 6f 66 20 61 75 74 69 73 74 20 61 72 65 20 79 6f 75 3f
 

Mavic Pro Platinum

Well-Known Member
Joined
Dec 30, 2018
Messages
428
Likes
278
Loc
From Charlestown, Indiana, USA
#15
Platinum crash ocean.


On Dec 30th, 2018, I was flying my Mavic Pro Platinum in the vicinity of Catbalogan harbor, Samar Philippines. I flew 15 minutes with no problems.6 minutes of that was in tripod mode, because I was flying around people and boats. I noticed the battery was 30%, so I decided to come back
and land. I pressed Return To Home. The Mavic ascended to it's return to home altitude of 260 feet. After that, the remote control disconnected from the drone. I never saw the drone start to come back to me. I moved around hoping to reestablish connection, but it never reconnected. So I gave my wife the remote control, and tablet, and started walking over to the pier where I knew it had been when I lost connection. I asked people if they had seen my drone crash, but no one had. I started walking back to my wife, assuming I would never find it. Then a guy came up to me and pointed to around 15 kids out in the water, and said they were looking for my drone. So I walked to the spot on the pier, as close to them
as I could get. Where they were looking the water was muddy and shallow, around 3 feet deep. After 5 to 10 minutes, one of them found the Mavic and held it up. I signaled to them to bring it to me. When it got close, I could see the battery was missing. I gave the boy who found it 3,000 pesos,
around $60, and the guys who carried it over to me 1,000 pesos. They were very happy! So I carried it back to where my wife and our boat was. On the way I bought 2 liters of drinking water. When I got to my wife, I poured the drinking water on the Mavic hoping to rinse off the salt water.
I noticed one of the motors wouldn't turn, and the gimble wouldn't move left to right(yaw). There was a quarter inch by half inch piece of one propeller broken, but still attached to the rest of the propeller. I saw no other damage. So I took the boat back to my wifes house on Darem Island. There, there is no Internet.
I now go back to September. Originally, I bought a Mavic pro in June 2017. I lost it by pilot error in Dec 2017. I bought a Platinum in Jan 2018. So I had one new Platinum battery and two old Mavic Pro batteries, one of which was the original one that came with my Mavic pro. This was
the battery I was flying with when the Platinum crashed. In September this year, I noticed my Mavic pro batteries wad swollen up on their underside where they attached to the drone. One was so swollen I had to use extra pressure to attach it to the Platinum. But you couldn't pull them off the Platinum without pushing the battery release buttons down. In October I went on a trip to Puerto Galera, Philippines, an
excellent place to fly a drone. I took all three batteries, but I never used the one that was swollen the most. I had about 10 flight with the slightly swollen battery without incident. So when I went to Samar in December I only took the Platinum battery, and the slightly swollen
Original Mavic Pro battery. At my wifes house I made 3 or 4 flights with the swollen battery and had no problems. So I took everything to Catbalogan because they have internet there, and I wanted to get Google Map showing up on my app. I fly with an app I wrote myself
in B4A, not DJI Go 4. After getting the map working at a restaurant with wifi, I decided to fly around the harbor. My swollen battery was already on so I decided to fly with it instead of using my Platinum battery, which was fully charged. The swollen battery was clearly not attached to the drone as tightly as a good battery would of been. So I flew around the harbor. After a while I started to fly in close proximity
to people and boats, so I switched to tripod mode to avoid hitting someone/something. I was in tripod mode around 6 minutes. I recovered the sdcard and all of the video plays. So what I think happened, was the Mavic/battery got hot from reduced air flow, and swelled more and detached from the
Platinum 260 feet in the air.
The day after I got my crashed drone back to my wifes house I filled a plastic container full of drinking water and submerged the Mavic in it for thirty minutes. Then I put it in a Tupperware container with rice for 3 days. On the fourth day I took it out and tried to power up. The platinum turned on, all the motors moved, the gimble moved, although not as much as it usually does, and all the lights came on and
it made the DJI sound. But the remote never connected to the drone, even after several minutes. So I put it away and I will try again later.
Conclusion: So I know everyone is thinking I shouldn't have tried to fly with the swollen battery. Was I stupid? Maybe. I certainly would never try it again. But I took a risk and I lost. In my opinion these original Mavic batteries have a design defect, but all DJI will do is tell you not to use them. They won't replace them, even though they crap out in 18 months.
I'll probably buy another drone, a Mavic 2 or 3, but not right away. I found several good Youtube videos about what to do if you crash in the ocean or get sand in the motors. Here are the links:



I also just posted another thing in the forum about "Repair defective mavic videos" but I can't find the exact link.

Here's the last 45 seconds before the crash. This is the repaired file.


Here's a picture of where it crashed, the red ball. View attachment 58775

Steve
I’m glad you found your drone!
 

Mavic Pro Platinum

Well-Known Member
Joined
Dec 30, 2018
Messages
428
Likes
278
Loc
From Charlestown, Indiana, USA
#16
Platinum crash ocean.


On Dec 30th, 2018, I was flying my Mavic Pro Platinum in the vicinity of Catbalogan harbor, Samar Philippines. I flew 15 minutes with no problems.6 minutes of that was in tripod mode, because I was flying around people and boats. I noticed the battery was 30%, so I decided to come back
and land. I pressed Return To Home. The Mavic ascended to it's return to home altitude of 260 feet. After that, the remote control disconnected from the drone. I never saw the drone start to come back to me. I moved around hoping to reestablish connection, but it never reconnected. So I gave my wife the remote control, and tablet, and started walking over to the pier where I knew it had been when I lost connection. I asked people if they had seen my drone crash, but no one had. I started walking back to my wife, assuming I would never find it. Then a guy came up to me and pointed to around 15 kids out in the water, and said they were looking for my drone. So I walked to the spot on the pier, as close to them
as I could get. Where they were looking the water was muddy and shallow, around 3 feet deep. After 5 to 10 minutes, one of them found the Mavic and held it up. I signaled to them to bring it to me. When it got close, I could see the battery was missing. I gave the boy who found it 3,000 pesos,
around $60, and the guys who carried it over to me 1,000 pesos. They were very happy! So I carried it back to where my wife and our boat was. On the way I bought 2 liters of drinking water. When I got to my wife, I poured the drinking water on the Mavic hoping to rinse off the salt water.
I noticed one of the motors wouldn't turn, and the gimble wouldn't move left to right(yaw). There was a quarter inch by half inch piece of one propeller broken, but still attached to the rest of the propeller. I saw no other damage. So I took the boat back to my wifes house on Darem Island. There, there is no Internet.
I now go back to September. Originally, I bought a Mavic pro in June 2017. I lost it by pilot error in Dec 2017. I bought a Platinum in Jan 2018. So I had one new Platinum battery and two old Mavic Pro batteries, one of which was the original one that came with my Mavic pro. This was
the battery I was flying with when the Platinum crashed. In September this year, I noticed my Mavic pro batteries wad swollen up on their underside where they attached to the drone. One was so swollen I had to use extra pressure to attach it to the Platinum. But you couldn't pull them off the Platinum without pushing the battery release buttons down. In October I went on a trip to Puerto Galera, Philippines, an
excellent place to fly a drone. I took all three batteries, but I never used the one that was swollen the most. I had about 10 flight with the slightly swollen battery without incident. So when I went to Samar in December I only took the Platinum battery, and the slightly swollen
Original Mavic Pro battery. At my wifes house I made 3 or 4 flights with the swollen battery and had no problems. So I took everything to Catbalogan because they have internet there, and I wanted to get Google Map showing up on my app. I fly with an app I wrote myself
in B4A, not DJI Go 4. After getting the map working at a restaurant with wifi, I decided to fly around the harbor. My swollen battery was already on so I decided to fly with it instead of using my Platinum battery, which was fully charged. The swollen battery was clearly not attached to the drone as tightly as a good battery would of been. So I flew around the harbor. After a while I started to fly in close proximity
to people and boats, so I switched to tripod mode to avoid hitting someone/something. I was in tripod mode around 6 minutes. I recovered the sdcard and all of the video plays. So what I think happened, was the Mavic/battery got hot from reduced air flow, and swelled more and detached from the
Platinum 260 feet in the air.
The day after I got my crashed drone back to my wifes house I filled a plastic container full of drinking water and submerged the Mavic in it for thirty minutes. Then I put it in a Tupperware container with rice for 3 days. On the fourth day I took it out and tried to power up. The platinum turned on, all the motors moved, the gimble moved, although not as much as it usually does, and all the lights came on and
it made the DJI sound. But the remote never connected to the drone, even after several minutes. So I put it away and I will try again later.
Conclusion: So I know everyone is thinking I shouldn't have tried to fly with the swollen battery. Was I stupid? Maybe. I certainly would never try it again. But I took a risk and I lost. In my opinion these original Mavic batteries have a design defect, but all DJI will do is tell you not to use them. They won't replace them, even though they crap out in 18 months.
I'll probably buy another drone, a Mavic 2 or 3, but not right away. I found several good Youtube videos about what to do if you crash in the ocean or get sand in the motors. Here are the links:



I also just posted another thing in the forum about "Repair defective mavic videos" but I can't find the exact link.

Here's the last 45 seconds before the crash. This is the repaired file.


Here's a picture of where it crashed, the red ball. View attachment 58775

Steve
NEVER use swollen batteries! It’s very dangerous to use them! If your batteries are puffing or swollen replace them immediately!
 

New Threads

Forum statistics

Threads
57,749
Messages
675,162
Members
84,546
Latest member
Guajardoc