Back in June my battery went from 65% to 6% in a matter of seconds and my I1 landed in the ocean never to be seen again. Sent my flight data etc. and dji replied back that they wanted to help...I was offered to purchase a refurbished I1 unit for $1950.00. I was stunned at that offer as I had done nothing out of the ordinary. Later I read on the forum (not the manual) that I shouldn't fly, shut down to move locations and fly again with same battery without charging said battery again. Not sure why warranty didn't cover battery as there was a couple weeks before the warranty expired????

Anyway, I'm looking for others who have had this problem and the responses from Dji after filling out an RMA.

From looking on this forum and a couple others it seems that folks who crashed but recovered their I1 dji fixed at no charge while those of us who crashed in water and did not recover their I1 were told tough luck!!

here is a link to my flight data from HealthyDrones.com that shows one cell of the battery is WAY out of whack.

http://healthydrones.com/main?share=MTcxNA

thanks all!

Jeff

You should consult an attorney and sue your dealer where you bought it. I would do and in my opinion you as a consumer do NOT have to expect that a battery cannot be used again when it has still 65% power. Warranty by law is always at the place you bought it. The manufacturer may give you additional complimentary guarantees but is not obliged to do so by law.

If the dealer you bought it from resides outside USA BUT attracts US citizens through advertisements or a english website place of court is still your city of residence.

PS: I have a similar log on Haelthydrones, it happened 2x already with one specific battery but I am always looking on voltage instead of % so I realized the upcoming problem before the drop came and I was already very near to home when it happened then and so I could prevent a crash.

Had the same thing happen to me where the battery went down really quickly, was able to get the Inspire down was not that far away. What I learned was that since I had not charged it 100% before the flight and the battery was sitting for a week or so, that caused the issue. There is a lot of recommendation that no matter what charge your battery 100% before the flight, may have to discharge a bit to start it but its safer. Have not had that issue after following the forum guidance from resident experts

My procedure (FWIW) Always charge to 100% for flight, either same day or night before.
Fly normally, land with an absolute minimum of 30% remaining.
Store Batts for longer downtime periods with 45-50% remaining.

When batt calibration is required, I hover close to ground and manually abort auto-landing to take the batts down to 0%.
When they cool down, I charge them to 100%, then fly them down to 50% for storage if not needed otherwise.

I have seen the sudden drop off of capacity from mid 20's %, down to 4 or 5% in a matter of seconds, but not from above 30%.
Above 30% they are solid, under 30% they are marginal.

Your mileage may vary..

Thanks all for the tips but I'm  well aware of battery procedures now. When the crash happened I had used the battery the day before and was fully charged for first flight and 72% for next flight 45 minutes later.

Machoman, thanks for the info & suggestions  I will check with vendor.

jrondo Posted at 2016-1-18 00:04
Thanks all for the tips but I'm  well aware of battery procedures now. When the crash happened I ha ...

Then it wouldn't have gone into self-discharge.
Clearly a different issue and probably a hardware fault - go to the dealer!

Lately I used two batteries to 60-70% and 3 hours later thought I can use them again ................... after a minute I noticed while showing me 60% it also shows 3.4v so I landed immediately and cancelled the flights.  Was the same with both batteries. If I would have continued flying they would soon had a sudden drop to 0-5% because the 3.4v are real while the 60% are some chinese mathematics.

Machoman Posted at 2016-1-17 20:38
Lately I used two batteries to 60-70% and 3 hours later thought I can use them again ............... ...

I assume you are running FW v1.6.0.40 which specifically addressed this issue?

P.S. Please don't answer with one of your vitriolic ramblings about how DJI have downgraded the Inspire and secretly taken features away and covertly changed power and made the esc's run at different pulse rates and how wind compensation is there one day but not the next etc.

A simple 'Yes' or 'No' will suffice.

Machoman Posted at 2016-1-17 12:38
Lately I used two batteries to 60-70% and 3 hours later thought I can use them again ............... ...

I have had the same thing happen  recently with my two TB48 batteries.

Farnk666 Posted at 2016-1-17 05:11
Then it wouldn't have gone into self-discharge.
Clearly a different issue and probably a hardware  ...

The dealer i bought  it from, B&H photo in NY, has language on website that they are not responsible  for warranty issues and to contact manufacturer.

jrondo Posted at 2016-1-17 23:07
The dealer i bought  it from, B&H photo in NY, has language on website that they are not responsib ...

I am sorry it seems that you actually dont have any consumer protection laws regarding warranty with dealers in USA. I really didnt know and its hard to believe.

But you still can go to a consumer protection organization and sue DJI USA. B&H excludes warranty only for not directly importet products which means you are dealing with DJI USA and not DJI China. Because if it would turn out B&H directly imported from China you would be obliged to implied warranty at B&H.

markjacobs.talk Posted at 2016-1-17 21:45
I assume you are running FW v1.6.0.40 which specifically addressed this issue?

P.S. Please don't a ...

How do you come to the idea Fw 1.6.0.40 addressed this issue? This has nothing to do with cold temperatures the 60% ---> 2% issues happened at 20C and this what happened lately were still over 5C. And it did not happen at all with 3km flight from 100%-->60% but it started immediately after a restart 3 hours later.


Fw 1.6.0.40 addressed the problem that under full throttle in cold temperature voltage may go under 3V (someone stated this is the v motor stop I didnt test it) temporarely and motors stop and it falls from the sky. This can be avoided using less throttle. It has nothing to do with the problem showing a battery at 60% while in reality its basically at 10% and 3.4v.

Machoman Posted at 2016-1-18 00:18
How do you come to the idea Fw 1.6.0.40 addressed this issue? This has nothing to do with cold temp ...

Ah yes, it was v1.5.0.30 that addressed this issue!

Are you running FW v1.5.0.30 (or later)?

markjacobs.talk Posted at 2016-1-18 21:11
Ah yes, it was v1.5.0.30 that addressed this issue!

Are you running FW v1.5.0.30 (or later)?

You want to tell me with 1.5.030 or later its safe to restart a battery with 60% ?

Machoman Posted at 2016-1-18 21:56
You want to tell me with 1.5.030 or later its safe to restart a battery with 60% ?

Indeed I do - read the release notes, then give it a try!

Machoman Posted at 2016-1-17 16:08
I am sorry it seems that you actually dont have any consumer protection laws regarding warranty wi ...

Thanks again for the info and suggestions, looks like I have no other option but to go the legal route.

Tharg (from the Posted at 2016-1-19 00:02
Indeed I do - read the release notes, then give it a try!

Î am already trying 1.6.040 at the moment because the cold temperature adjustments are useful for me.

So what I have

+ stable flight in cold temperatures
+ probably starting not with 100% fixed - have to test
+ gimbal advanved setup works not to make the left-right move
+ OSMO compatibility

- no way to bypass the 500m alt limit which limits use on mountains
- speed reduced from 22m/s ---> 18m/s
- exp settings connected to speed limit 15-18m/s in GPS and F mode

I really would wish DJI could make a fw with only + and no - but for me it ends here no way I will install 1.7 geofence fw.