I did a quick search on Minn-kotas website. I am not sure what brand of trolling motor you have or are planning on buying. But Minn-kotas site has nothing.
They have a 1-800 number for technical questions:
https://www.minnkotamotors.com/support/faq.asp?pg=general&pt=20
How can I get technical information about my Minn Kota® product?
If you already own a Minn Kota trolling motor or Minn Kota product, please refer to the original product manual for any respective technical information.
If you are inquiring about technical information before you purchase a Minn Kota product, we would be glad to answer any technical questions you may have.
In the U.S.A. and Canada, please call 1-800-227-6433.
For any other general technical information, please contact us at 1-800-227-6433.