Charge attack
From SpiralKnights
Charge attack is a type of attack activated by holding down the attack button until the charge is ready and then releasing the attack button to unleash the attack. After holding the attack button down for the duration of the charge time, the user is notified by a glowing visual cue as well as an audio ping. Releasing the attack button prior to charge completion will cancel the charge attack. Getting hit either from enemies or from status ticks will also cancel the charge attack.
The charge time varies from weapon to weapon. All weapons receive a low charge time reduction bonus at heat level 5 and a medium charge time reduction at heat level 10. Charge times may be further reduced with unique variants.
Charge attack is the primary attack for bombs and a secondary attack for swords and guns.