The white terminal is a rocker, so you can push 1 side down to insert the raw copper end of a wire (easier than soldering or taping with electrical tape).
Just be careful to not push the wrong end (like i have done numerous times) and you have to reinsert the battery wires.
You can also twist raw wires from multiple lights and insert them as a group (obviously, all lights requiring the same voltage, and keeping the positive and negative wires organized).
Holds a 3 volt CR2032 battery (not included). Also has an off/on switch.220403new