Like the Bighorn, the Capacitor also decays its stacks after some time.

In TU12, the Bighorn received a timer on its UI to communicate to the player when the timer will go out. The Capacitor also has almost the same timer type mechanic but doesn't have the UI quality of life like the Bighorn. A suggestion is to put the same feature in the Capacitor, it would be very nice!

Bellow, a video comparing the weapons and their UI.