The MEC-mountable Electro Pulse is supposed to stun organic enemies and damage robotic enemies in an area around the MEC trooper. What exactly does it do? How much damage does it do to robots? How many turns are organic enemies stunned for? Are organic enemies completely incapacitated by stun? What is the ability's radius? How many charges does it have?
According to this Source, "Electro Pulse is an Area of Effect ability that deals 5 damage to all units (excluding the MEC) within its radius. Robotic enemies are stunned for one turn."
It does 5 damage to all units (including allies but excluding the MEC using this ability in the sphere area around the MEC), then it stuns as well Robotic units for 1 turn. Here's a picture of affected tiles.
think of this as a rocket that is centered on your mech as far as area effect. If your plan, like mine was to get set up with paladins and then stun enemies for research, think again. they KILL organic enemies, NOT stun them, game description is junk.
the one good thing about this is it does not count as explosive so you get to keep the loot.