Donatello was autistic and his hyperfixation was science and technology. But the bad thing is that he's always locked up in his lab or always with a Screen,he had few laptops and Computers,tablets and a phone. He was sitting on his chair under his bed,leaning on his desk,when he realized his phone was out of batteries,he got in panic,he started panicking he was addicted to the Screen. Donatello saw his phone's screen turn off and panicked more,until one of his robo-arms coming from his battle shell handed him his tablet. He started calming down and watched the tablet,surrounded by other tech.

"..phew."