ELI5: Explain Like I'm 5

Intermittent power source

Intermittent power source is when power (electricity) comes and goes or is not always available. Think of it like a light switch. When you turn a light switch off, no power is going to the light, but when you turn it on, the power starts flowing and lights up the room. In an intermittent power source, the power is like that light switch, it comes and goes.