/diy/ - Do It Yourself

>>1406063
>>1406065
Capacitance across battery +/- helps to smooth voltage spikes/noise introduced by ESCs.

A few years ago most ESCs would come with an electrolytic cap across their power input, but with everybody wanting smaller components these got removed in favour of smaller ceramic SMD capacitors. Problem is that these small SMD caps frequently aren't enough, especially now that we're running 40A+ ESCs at crazy speeds & with active braking.

Not all builds will need extra capacitance, but some people will just add it to all of their builds just in case.

A 1000uF 105° capacitor with suitable voltage rating (25V for 4S, 35V for 6S) soldered across the battery input terminals is the usual approach, especially with 4in1 ESCs. If you're running individual ESCs you can put a 330uF on each ESC across the power input terminals.