I flew sports today and when I started at 99% the battery was 23 degrees Celsius and when I landed at 42% the battery temperature was 67.7 degrees Celsius. Outside, the temperature was 4 degrees Celsius. Is it safe? In addition, I noticed voltage differences on the cells.Please help because I don't know if I can fly this battery.

Better not to risk and use this battery. Cell # 3 may suddenly suddenly drop in voltage, and the drone will perceive this as 0% battery power and perform a forced landing.

so far the dji 4 go app shows no battery errors. but then I will have to look for another battery. but the weirdest thing is flying on P / Gps mode there are no deviations or they are small and the battery temperature does not exceed 50 degrees. so in GPS mode I can use this battery?  

djiuser_1Xk6LosBlijC Posted at 3-18 21:45
so far the dji 4 go app shows no battery errors. but then I will have to look for another battery. but the weirdest thing is flying on P / Gps mode there are no deviations or they are small and the battery temperature does not exceed 50 degrees. so in GPS mode I can use this battery?

If you do not fly over water, a sudden crash landing will not damage the drone.

Hi,

Can you put a link to airdata, so i can download your batt cell values and compare your cells with other batterys.

cheers
JJB

but for you to be able to read my battery logs, I would have to give you my login and password for my airdata account.

djiuser_1Xk6LosBlijC Posted at 3-19 04:17
but for you to be able to read my battery logs, I would have to give you my login and password for my airdata account.

nope, you can share the link to your upload on airdata.  many users do.

But if you share a cloud-link to your flightlog.txt, i can make a read-out and comparison

cheers
JJB

do you have any telegram applications?

djiuser_1Xk6LosBlijC Posted at 3-19 13:28
do you have any telegram applications?

All you need to do is tick the SHARE box in Airdata and then provide the link to the Airdata report

https://app.airdata.com/share/dUNTaE

compare and let me know how it looks like for you

djiuser_1Xk6LosBlijC Posted at 3-19 22:27
compare and let me know how it looks like for you

Hi,

In the airdata converted data no batt temperature and amperage.
Sport mode does ask a lot of the battery, escpecially with 100% inputs in pitch and up.

But in the beginning of your flight (batt % = 92) 2 cells (#1 and #3, #3 the lowest) dropped below 3.3 volts.
See my chart.

Cell deviation 150 mVolts, wich is oke (if it is only for short period of time), but in your log 25% of flight time > 75 mVolts and 23% of time > 100.

So imo your battery is not a 'good' battery, or your battery was very cold at start of the flight.

cheers
JJB

when I started the flight, the battery was about 18 degrees Celsius. so it could be cold I agree. because later it was ok. I will fly on it, but only in GPS mode.

Take a look at this flight
https://app.airdata.com/share/gdabAD

djiuser_1Xk6LosBlijC Posted at 3-20 07:14
Take a look at this flight
https://app.airdata.com/share/gdabAD

Nice long flight.....

Batt cell > 3.3 all flight, but cells do have some deviation.

cheers
JJB

how do you rate this battery?

djiuser_1Xk6LosBlijC Posted at 3-20 09:33
how do you rate this battery?

well, i monitor my battery after each flight, so i can see detoriation etc....

This battery is oke for me, all cells normal values from full to just above 3.3.
Cell deviation is so so....but for me ok.

cheers
JJB

hey i have a question can i find these batteries slightly swollen?touching these two batteries feels fuller than the other 3 batteries in the set. when I run over these batteries with a credit card, the gap in the center of the sticker becomes smaller and it touches the card slightly.can i fly them there are no deviations on them at air data.