power supply to arduino nano

Other Hardware Motors, Mechanics, Power and CNC
1

I am using :

  1. Arduino nano
  2. mg995 servo motor ( MG996R Robot servo 360° Rotation – Tower Pro )
  3. dc motor
  4. L298n motor driver
  5. HC 05 bluetooth module
    for my project.
    I would like to know what kind of battery (and how many) i should use to power the circuit.
    And also provide connections for the circuit.
2

How much current does the DC motor require? What is the rated voltage of the motor? Why use an ancient and inefficient L298 motor driver for a battery powered project when there are much better modern motor drivers available that do not waste so much power?

3

And as well as all those, how long do you need the battery to run for before you have to recharge or replace it?

Steve

4

run time is around 3 to 5 minutes.
And details of dc motor are :
Operating Voltage(VDC): 3~12
Shaft Length (mm): 8.5
Shaft Diameter (mm): 5.5 (Double D-type)
No Load Current: 40-180mA.
Rated Speed(After Reduction): 150 RPM
Rated Torque: 0.8 Kgcm

5

After some research I found about switching voltage regulators. So can I use a 12v li ion battery connected to Arduino and use 6v switching voltage regulator for servo motor?