Not to be confused with the Tesla Coil, which bears the same name but is not a component part of the Tesla Staff but shares a similar function.
The Tesla Staff is an experimental PvP-only weapon in the GregTech mod. The Tesla Staff holds 10 million EU (the same as an MFSU) and can only be charged in one of GregTech's energy storage devices: either the Lapotronic Energy Storage Unit, the Adjustable Energy Storage Unit or the Interdimensional Storage Unit. When attempting to use the Tesla Staff on mobs such as Zombies or Spiders, it has no effect. The arm-swing animation is played, but no EU is discharged from the weapon and the mobs take no damage.