How to ensure you have enough power to complete a task

[keshman]

I hope this makes sense and its in the correct area.

Lets say I have a circuit connected to a battery. I want to transfer and hold enough power, before the battery is disconnected, to be able to start my ESP32, turn on a 6V DC motor ( .75a) for 1 second, then wait for 5 seconds and reverse the motor for 1 second.

I was thinking that a capacitor would do the trick, but not sure if that is the best way to do it.

My main concern is cost and size, I did think of having a rechargeable coin cell (if there is such a thing ) but again not sure how long the charging would take, etc.

I am hoping for no more than 1 sec to transfer the power before disconnecting the batter.

Any advice would be great