That would need 2x 18650, 5v minimum.
I made an IH with this and 2x18650,
https://www.ebay.com.au/itm/5-12V-Low-Voltage-Induction-Heating-Power-Supply-Module-Induction-Heating-board/273364674302?ssPageName=STRK:MEBIDX:IT&_trksid=p2060353.m1438.l2649
My son made me an IH using the @LesPlenty method. Love it. It's in a cute stash box, and it's easy to use.That would need 2x 18650, 5v minimum.
I made an IH with this and 2x18650,
https://www.ebay.com.au/itm/5-12V-Low-Voltage-Induction-Heating-Power-Supply-Module-Induction-Heating-board/273364674302?ssPageName=STRK:MEBIDX:IT&_trksid=p2060353.m1438.l2649
Started like this...US$12,Any photos of your IH
How about something like the Mistvape Beast?
http://fuckcombustion.com/threads/dynavap-mod-based-heater.42613/