I haven't used them again so far, but the charger shows that cells internal resistance are around 10-15 mohms. They stayed at 2.6V for a short period of time, so I gues they survived.
Never seen a li ion drop so consistently fast. Something is wrong with the battery situation. It should hold at 3.8, 3.6 3.0, 2.8 and 2.6. Not just run straight through the volts. I bet it was hot, turning energy into heat instead of flowing amps to the esc. Your amp draw was a little on the high side at 20a but that shouldn't just run through the battery like 40a does.
Thanks for your feedback! This is my first time flying batteries in parallel. In this flight I wasn't able to check temperature as soon the drone landed (it took me 2-3 min to retrieve it). I've used these batteries alone for shorter flights in 5" drone and they get warm not hot (around 20C warmer than ambient temperature), but it seems normal. In this parallel setup the 22A draw is splitted between the two, so they should be ok. What do you mean by the battery should hold voltage at specific intervals? I expect to have cells at half capacity around 3.6V according to Molicel discharge chart. Below 2.8V the discharge drops dangerlously up to 2.5V (on theory fully discharged). Just to keep in mind, the total flight duration was 16 min, instead of 10 min and the video shows. The average throttle was 44% in the period.
Cool flight! Do you have stock antennas on the googles? What about dji o3 unit antenna?
I installed TrueRC X2-AIR 5.8 Mk. II antennas in my Integra. The drone is equipped with two TrueRC Matchstick 5.8 GHz LHCP.
Very excellence flight, nice place nice batterry and nice pilot.n How about your batterry die or alive?
I haven't used them again so far, but the charger shows that cells internal resistance are around 10-15 mohms. They stayed at 2.6V for a short period of time, so I gues they survived.
That's a really good distance for this setup. Especially since you still had the GoPro. Was it the full size 11 or mini?
Great work
Thanks!
drone ka price kitna hai
A 7" drone around $800, equipped with an O3
Never seen a li ion drop so consistently fast. Something is wrong with the battery situation. It should hold at 3.8, 3.6 3.0, 2.8 and 2.6. Not just run straight through the volts. I bet it was hot, turning energy into heat instead of flowing amps to the esc. Your amp draw was a little on the high side at 20a but that shouldn't just run through the battery like 40a does.
Thanks for your feedback! This is my first time flying batteries in parallel. In this flight I wasn't able to check temperature as soon the drone landed (it took me 2-3 min to retrieve it). I've used these batteries alone for shorter flights in 5" drone and they get warm not hot (around 20C warmer than ambient temperature), but it seems normal. In this parallel setup the 22A draw is splitted between the two, so they should be ok.
What do you mean by the battery should hold voltage at specific intervals? I expect to have cells at half capacity around 3.6V according to Molicel discharge chart. Below 2.8V the discharge drops dangerlously up to 2.5V (on theory fully discharged).
Just to keep in mind, the total flight duration was 16 min, instead of 10 min and the video shows. The average throttle was 44% in the period.