The ETS ABP-2 backpack system is engineered specifically for lamprey programs. The ABP-2 features two independently controlled rate and duty cycle channels instantly accessible by two separate thumb switches on the anode pole. Channel 1 has selectable standard or bursted waveforms for optimal dislodging of ammocoetes. Channel 2 has a standard pulse wave train for stunning ammocoetes, lamprey, or fish.

The ABP-2 unit is mounted on a light-weight open with military-style quick release straps and uses light weight, economical 12V batteries.  The total weight of the ABP-2 backpack including the frame, straps, and 15amp-hr battery is under 20 lbs, minimizing fatigue in the field.