Hello, I am an engineering student working on a team based project. I am seeking knowledge on selecting the right battery to run a system with the following components:
Vellman VMA03 motor-shield
2 DC Geared Motors - 12V 100RPM by DFRobot
All together the box weighs 1.1 kg or 2.425 lbs with out any batteries.
In a recent test, our team hooked up a bench power supply to the rear motor. The single motor drew 0.2 A with no load and 0.6 A with a load. Our test successfully rotated the rear axel and was able to pick the aft end of the box off of the ground.
Our team theorized that we need approximately 0.6 + 0.6 = 1.2 A to successfully run both motors in tandem under load.
I need to find a battery that can produce 12V and 1.2 A in the smallest weight possible.
If the battery is rechargeable that is a bonus. If the battery can fit and ride in the box that is better.
Our end goal is to turn both motors at the same rpm, rotate all 4 “feet” together, to lift and push the box forward in straight line.