Audio-Technica LI-220 Lithium-Ion Battery

The LI-220 is the rechargeable lithium-ion battery for Audio-Technica's ATW-DT3201 compact body-pack transmitter in the D50 digital wireless system. Keeping spares on hand is what lets a touring rig or house of worship swap a low pack between services or sets instead of waiting out a full charge cycle mid-show.

It charges in the transmitter itself or in an ATW-CHG6/ATW-CHG7 charging station, and its capacity is reported by the transmitter and D50 management software rather than left to guesswork, so a tech can see runtime remaining before it becomes a problem.