ON THIS WIKI
The Nano Saber is a weapon added by IndustrialCraft2. It requires EU and can be charged up to 40,000 EU in an MFE or an MFSU. It deals 10 hearts of damage, or 12.5 with a critical attack. Thus, it is able to kill most regular mobs in one hit, although Zombies must be hit with a critical hit for it to one-hit them.
When turned off, the Nano Saber deals as much damage as a Stone Sword (+4 Damage/2.5 Hearts). It must be turned on to deal maximum damage. To turn the Nano Saber on or off, simply right click with the Saber equipped. While turned on, the Nano Saber will constantly consume EU whether it is being used to attack entities or not. Therefore, it is advisable to always keep it turned off when it is not actively in use.
An active Nano Saber will drain 64 EU/t, consuming 512 of its stored EU every eight ticks. At this rate, a Nano Saber which is constantly turned on will take about one minute to drain the entirety of its stored EU. If a Nano Saber is turned on for only a split second (too short of a time for the game to realize that it is turned on and react to this by drawing power from its stored energy) it is theoretically possible to use the Nano Saber without consuming EU from its internal storage, although this requires consistent split-second timing.
Note: The animated blade is glitchy on multiplayer servers, often jumping between on and off and becoming stuck on one part of the animation for long periods of time. Keep this in mind while using it on a server, as it can fool one into leaving it on when one is not using it, thereby wasting its stored energy.