In Today’s video we learn how to put 6 cell batteries on 4 cell quadcopters. We even learn to do make it do both! And it’s all about how to properly set up a Output Limit. It is commonly known to put a throttle limit in order to get away with running a 6s battery on 4s motors. If something were to go wrong you could easily smoke your motors, or even your entire quad. Setting a output limit properly will prevent that from happening and allow you to have all the 6s fun you want on your 4s build!
We take it a step further and we learn how to set it up on auto profiles so that way you can still use your 4s rig to fly 4s batteries, no extra work needed, when you plug it in…. it automatically detects the voltage and adjusts to the correct profile for that battery’s cell count!!!! I know.. i know… that’s amazing!!!! Let’s Go!!
Check out my Ultimate Throttle Cap Guide:
https://youtu.be/Yc2-NdRbHfQ
The simple equation you will need is:
“Desired 6s Kv” ÷ “Actually 4s Kv” x 100 =
“The Percentage Needed” a.k.a “Magic Number”
Auto Profile CLI Command:
set auto_profile_cell_count = “The Cell You Want”
CLI Command For Setting Your Output Limit/Percentage
set motor_output_limit = “Your Magic Number”
Check Out My Other Betaflight Vids:
https://www.youtube.com/playlist?list=PLE-EjNqyKwcgnWicwt_pJeYuVZDCT66lS
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Sir I have a 5s motor and 6s battery so what can I do ? And can you tell me how to program ESC on configure on 5s quad and I’m use radiolink mini pixhawk so what can I do ???
@DrainMan FPV Awesome vid! Subbed! I understood that one would also have to adjust PIDs to make high kv work with 6s properly. Is that not the case?
Also, could use this method to simply “lower” the kv of a given motor to behave exactly like it’s lower kv counterpart of the same motor – both on 6s. For example a 2806 comes in 1800kv and 1200kv options. Could you get the 1800kv and lower it to 1200kv and thereby have basically two motor types in one for longer range flying? 1800kv on 6s for more power and 1200kv for smooth cruising/distance at the flip of a switch.
thanks bro.. nice info
Will you have problems with RPM filters?
Increase efficiency for a 7 “long range?
Can I configure it so that with 4s I also have 1750 kv and not 2400kv?
Brilliant Drainman. I just received HGLRC Sector5 which I ordered with 4s motors but is 6s capable otherwise. Perfect opportunity for me to try this. Thanks Bro!
Nice vídeo!! How can I reverse the changes in the future?
So this only works on betaflight 4.1 ?
I imagine you can also use set motor_output_limit = 100
True? XD
after doing this, can the different profiles have different PIDs and filters? of you tune PIDs after do need to setup again?
Followed your setup to the letter and plugged in my brand new stack which is 6s rated and nothing but smoke!!! GREAT TUTORIAL!!! Ive been flying since 2015 also. Not my first build in anyway!!!