Powering Pi + ESC from One Source

I’m working on a project in which I’ve modified an RC car to be controlled by a Pi to do autonomous driving. In order control the wheels, I use an ESC which requires a battery. Both my Pi and my ESC require power, and I’m looking for a power source of some sort which I can use to power both my ESC and Pi from a single source.

My ESC has a working voltage of 3-9.4V and my Pi is a 3B. Is there anything small that I could mount onboard my RC car to power both of these devices?

EDIT: I should also note that my ESC has a 5V BEC that may be able to power the Pi, but I’m not sure if it’s too much / not enough power for the Pi, and my BEC is currently powering a PCA9685 board for PWM

submitted by /u/swiftmiles
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