Clear-Com BAT70 EQUIP Rechargeable Battery

The BAT70 is the lithium-ion cell that powers Clear-Com's EQP-WH all-in-one wireless headset. It is replaceable rather than sealed into the shell, which is the difference between swapping a battery at interval and taking a headset out of service. A charged pack runs 8 to 12 hours depending on how much of the call is spent talking.

Charging is by the AC70, which fills four at once in about two hours and stores four more. At 0.11 lb and 1.6 by 1.8 in the pack is small enough that carrying spares per position costs nothing in weight, and it is the cheapest insurance against a headset going quiet mid-show.