Can I be hurt by the power supply? No, the jackets power supply is only 7.4v. If the wiring was cut in any way, the jacket would cease to operate. By ubd|2020-08-08T08:03:18+11:00August 8th, 2020|0 Comments Share This Story! FacebookTwitterRedditWhatsAppEmail Leave A Comment Cancel replyComment Save my name, email, and website in this browser for the next time I comment.