Thanks Bob A,
The sight doesn't say how many amps it draws, only that it's rated at 4000 hertz. I've never used diodes before so I'm not sure how to get those or wire them. I guess it requires a bit more research on my part.
The lady on the phone said that although it's rated at 3 volts the product says "use no more than 5 volts" on the box. Do you think I could get away without using a resistor or diode at all?
Also, I'm splitting the circuit so that a pos and negative goes to the inverter and a pos and neg goes to a bunch of leds in paralell using resistors. Does everything still get 4.8 volts or have I screwed that up by splitting it off to the inverter. Still getting the hang of this electricity thing.