Discharge

After the discharge lands on the battlefield (which also does some damage to units it lands on), it will then emit three pulses of electrical energy, each about a second apart, which damage all nearby units. Because of its relatively slow effect, it is difficult to use against moving units, but it can do substantial damage to stationary units.

In order to build these, you must research the "Discharge" technology (level 7 tesla) and your artillery factory must be level 6 or higher. The construction cost is 200 ammunition and 200 ionites. They can also be upgraded at the artillery factory; the upgrades cost both Tesla research points and resonators, with additional gold upgrades.

Note: The description for upgrades often does not match the actual effect of the upgrade. The values shown in the table below are the actual benefits of the upgrade.