I'm still confused.
I was in the understanding that regardless if it's 2s or 3s input on on the 1080, the BEC output was either 6v 3a regardless.
It has a switching type BEC so it doesn't convert the higher voltage to a lower voltage by heat. That's liniar BECs
Yes the exact reason a switching regulator is used. Switching regulator is also called a Buck converter. What they do is turn the flow of voltage on and off as needed. Ill do my best here. In simplest terms the regulator goes on, lets some voltage through but at the same time cause an inductor to create a magnetic field. It then turns off and the magnetic field then becomes the current that is operating the output device.
Let me put it this way, you want to fill a pool at a rate of 6 gal per minute but only have a hose that delivers 12 gal per minute. You only want 6 gal per minute. You split the hose and put 6 gal per minute into a bucket and 6 gal per minute into the pool.
You then turn of the hose at the same time you open a valve from the bucket. Once the buckets empty you turn on the hose again.
It all happens so fast that there is not interruption in the fill rate.
So your switching bec is about 90% (often more)efficient. Unlike a linier that burns up the extra as heat, the switching loses some(to heat)from the creation and dissipation of the magnetic field.
Now back to your 2s vs 3s. If your BEC out put is 6V@3A the your wattage is 18 watts.
Using 2s your voltage is 7.4 so 7.4(Amps)=18 your input Amp should be 2.4
Using 3s your voltage is 11.1 so 11.1(amps)=18 your input Amp should be 1.6
None of that considers the heat loss.
Now your BEC will put out a maximum of 6V@3A, regardless of what your input is(so long as it is more then the output).
The actually out put of your BEC completely depends on what the device you are powering is asking for. If you have a 6v LED that draws 20mA then that's all that is coming out of the BEC.
The only time the output voltage drops is when the demand exceeds the amps available.
Amp is the volume of energy being used, voltage is the pressure in which it is supplied. (not exactly accurate but the commonly accept analogy)
Hope this helps some.
