search

o-gs / dji-firmware-tools

Tools for handling firmwares of DJI products, with focus on quadcopters.
GNU General Public License v3.0
1.44k stars 403 forks source link

DJI Air 2S BMS BQ9003 error code: 110024/30074, Project DOUBLE BATTERY #325

Open alanzhch opened 1 year ago

alanzhch commented 1 year ago

Does anybody now if the new battery of the air 2s, has a "lock sensor" which recognize if the battery is in the drone or not? The old dji mavic air batterys had a lock sensor!

Fact: I took the cellpack out of the case and tried to start the drone with only the battey pack inside. The drone starts but takeoff is blocket with the error codes in the titel of that request.

If the project works i will share the documentery how tho build a double battery, out of two original packs.

alanzhch commented 1 year ago

FYI: I use a CP2112 with DJI Battery Killer, no PF Flag active at this moment.

akhilzid commented 1 year ago

Air 2 can detect that the battery is properly inserted, just short the terminals near the battery lock in drone to cheat that. Screenshot_2023-02-11-23-54-35-77_965bbf4d18d205f782c6b8409c5773a4

alanzhch commented 1 year ago

Cheers, i guess you mean the two holes where the metal clips snap in from the battery case, in to the drone case? If you mean something else with "the terminals" let me know please.

I ordered two new batterycases because i had to cut the originals of, to take the cellpack out.. :) Now i try to solder a parallel connection between the two cellpack from the most positive and most negative poles. The pack which goes in to the drone as before will be charged with the original charger and the upper pack with a charger via xt60 connection. The two pack will be connected via xt60 as well and be balanced as before.

alanzhch commented 1 year ago

The company from singapoore who sells double batterys, dont export the to other nations... So i have to do it by myself..

akhilzid commented 1 year ago

This is the "lock sensor" in air 2S, shorting this two terminals will detect battery. Screenshot_2023-02-12-00-08-55-55_965bbf4d18d205f782c6b8409c5773a4

alanzhch commented 1 year ago

Ahhh one problem solved for the moment. Thank you! I will be back next week and will try it out.

Aleksancho1304 commented 1 year ago

what is your current progress?