1. Remove the battery cover. Remove the plastic battery cover inside the hat by wiggling it back and forth while pulling towards yourself.
*If the cover is tougher to pull off, use a set of pliers to pull up the corner pins of the battery cover and apply the same removal technique.
2. Insert 2 AA batteries. Once the battery cover is removed, the black battery inverter will be exposed to insert the batteries. Gently lift up the black inverter to slide down the inverter cover. Insert batteries & close inverter cover.
3. Put all covers back. The black inverter should be stored snug in it's pocket & the plastic battery cover on top of it holds it in place.
4. Turn it on. Push the circular button on the battery cover. A red light will turn on to indicate that your inverter is working & turn on your hat lights. Our battery inverters have 3 different light settings : Solid, Blink, & Flashing. Cycle through all 3 settings to turn off the inverter & hat lights.