280LM Led Headlamp needs FCC certificate?
FCC certifications (USA) are generally only needed on commercial products that may radiate levels of AC energy over about 10khz.  If your device operates only in a DC mode then there is no FCC requirement.

The USB recharging, as with many other products, only uses the DC power from the connection.

CE covers all sorts of different certification topics for EU countries.  ROHS deals only with Hazard Substances.  

On top of that, only the manufacturer needs to acquire the FCC certifications, not the user.