[quote=@whizzball1]
<Snipped quote by Multifarious>

-Soren- They have to run out of power eventually. Did you notice back when X did that poison ground for the first time, it was sucking away both of their energies?
[/quote]

Actual exhaustion might not be a thing though. For all we know, it could work like any other portable electronic- runs just fine, at full throttle until it runs out of juice.