EL inverters allow you to drive EL wire. This particular EL inverter accepts 3V input and outputs 110VAC. These are designed to plug directly into the EL Escudo. You can drive EL wires with them directly, but you may need to re-terminate them.
The current model ships with red and black wires on one side which are the 3V DC input to the inverter (red is positive, black is ground). The black wires are the 100V AC output - both terminated with JST PH connectors.
These work well because they accept anywhere from 2.7-4.2V, so you can use them with batteries quite easily.
Note: Some real world testing revealed that this inverter can easily drive a 3m length of EL wire. When adding a second 3m length, the two get a bit dimmer, but still close to full brightness. At 3 3m lengths, you can only tell all three wires are on if the room is dark. The inverter can light up 4 strands, but they are barely visible in normal light and very dim in the dark as well.