Yes.Are woried about human safety?
I had thought about putting the battery on the inside of the vest. Battery loss will heat the human. The battery will be worm and work better than if the battery was at -40C, out side temperature. But batteries burn up some times. Do you want a battery pushed against your skin. On the news they showed some pictures of E-cigarettes catching on fire in a picket.
----------edited-------
How is the computer being powered? 5V?
If this is just a prototype then it does not matter. Use a wall wort and don't worry about it. But you need to power the computer and 3V is low.
Last edited: