Which is definitely not enough precautions. His jumpstarting Max had been a gamble and had worked. He's been able to refine it since then, acknowledging he had taken a risk that happened to work out in his favor, but he wouldn't recommend those conditions again.

"Shouldn't knock you at all. Stupid. No sense." He's scolding you, Ratchet. He's grateful, but you make him worried, and the best way to channel his worry is to be angry.

"Come here, put your head here--" He manages to lift his hand after a moment, then lays it against his chest. "Listen."