20.4:1 Metal Gearmotor 25Dx50L mm HP 12V - Stall Amps

Hi i am working on robot but one thing i still cant get my head around is the stall A.

Key specs at 12 V: 500 RPM and 300 mA (max) free-run, 85 oz-in (6 kg-cm) and 5.6 A stall

Does this mean to work optimally this robot requires a power supply of 5.6A or will it work just as well at 300mA.


The motor can briefly draw up to its stall current at startup. To be safe, I recommend planing your system for handling at least the stall current for short periods.


If i am using an ardunio what would you recommend for a motor shield or something along this lines for a 5.6 Amp stall current or is there a way to get around it

You might consider our Dual VNH5019 Motor Driver Shield for Arduino. You can see more about using it with an Arduino in the “Getting Started with an Arduino” section of its user’s guide.