Defeats someone comparable to him with infinite stamina after he got injured and used up some energy

SLASH! Cell's claws opened an angry wound on the side of Vegeta's shoulder, causing him to roar angrily. The cuts had barely scratched the surface, but they were an ugly reminder of Cell's now-evident advantage.

- Bringer of Death Chapter 42

"I'll show you perfection, freak!" Vegeta yelled, hitting Cell in the face with a flurry of jabs and punches. His speed was incredible, too quick for the monster to block any of the powerful blows. Pausing at the end of his barrage, Vegeta swung a hard upwards kick into Cell's stomach and sent the creature flying.

His aura burst out around him again, harsh golden light, and he chased after the creature. Cell didn't even have a chance to recover. Before he knew it, Vegeta kicked him hard in the back, sending him flying even higher into the air. The prince then shot straight up into the sky, passing Cell and positioning himself right in his trajectory.

"Not smiling now, are you Cell?" Vegeta mocked. "Better move quickly, or else you won't be able to dodge my SUPER GALIC FLASH!"

The wave of power came gushing out of Vegeta's hands, its width great enough to swallow four or five Cells whole. The monster's eyes bulged, showing the first look of fear he had displayed yet. He was barely able to move his hands in front of his face for a last-second block.

KABOOOM! The beam exploded in midair, sending golden rings of energy out perpendicular to the beam. From the brown smoke, Cell plummeted like a rocket to the ground below, his body smoking the entire way. Vegeta landed first. Just before impact, the prince lifted his leg and did a spin kick, sending Cell bouncing even further. Finally, the monster could rest, the series of impacts having left him with bruises all over. Purple blood dripped from his scorched frame.

- Bringer of Death Chapter 43

Vegeta suddenly vanished, reappearing above 16 and slamming the android in the head with two powerful fists. The orange-haired android went careening down into the city, crashing and forming yet another crater of debris.

"I've got some unfinished business with this one, Cell. Why don't you go absorb your little androids, starting with the pretty one who was foolish enough to try to show you mercy," Vegeta said, laughing. He could feel himself slipping, his anger in control. His grudge against 16 was overwhelming. Was he doing the right thing? He didn't care. "That stupid robot actually thinks it has feelings, hah!"

...

16 climbed up out of the rubble. He had been strong enough to beat Cell, that much he was sure of. He was more than a match for the cruel bio-android in raw power, and his mechanical design gave him a wide array of advantages. But Vegeta would be an entirely different challenge.

"You do realize, android, that those other robot friends of yours are going to be absorbed no matter what!" Vegeta said, laughing as he stared down at 16 from above.

The tall, armored android pulled himself up to his feet. "You misunderstand, Vegeta. We do not wish to harm anyone. By helping Cell, you betray both your planet and your friends," 16 argued. "He will destroy this whole Earth, even your son, the one called Trunks!"

"Silence!" Vegeta yelled, punching 16 directly in the face and knocking the android back hard on his back. "You know nothing, android! Cell is a nobody compared to me! I will not be defeated again—not by those pathetic energy absorbing androids, or by time-traveling bio androids with Saiyan DNA, and especially not by pathetic androids who use cheap shots from behind!" Vegeta grabbed 16 by the shoulders and hurled him into the air, charging after the robot in a flash.

As he flew through the air, 16 rapidly calculated that Vegeta would be immune to reasoning at this point. Force—deadly force—was the only option. Rolling over, he fired dual lasers from his eyes at Vegeta and then accelerated, rocketing upward.

Vegeta dodged as he flew, but the lasers still caught him in the torso, piercing his armor and searing his skin. He barely felt it. With vastly superior speed, he caught up to 16 and caught him with a hard elbow from behind, sending him flying forward and out of control. Grinning savagely, he extended both hands and fired two shining beams. "YAAAAH!"

At the last second, 16 dove out of the way of the blasts. He could sense that they were far more than he would be able to withstand head-on. He accelerated again, firing a flurry of small energy blasts that Vegeta easily dodged.

As long as he could keep up this dogfight, 16 reasoned, he would have a chance. His infinite power source allowed him to maintain flight indefinitely; in comparison, Vegeta was constantly burning energy. If he could tire the Saiyan prince out, he might be able to stop him for good.

...

"How dare you blindside me—me, the strongest warrior in existence. You have no idea the humiliation you dealt me. And now, I am going to have my retribution!" Vegeta's eyes were aflame, burning with his desire for vengeance.

16 already knew this was a fight he could not win. His systems were just not designed to keep up with the power of an ascended Super Saiyan. Yet, as he thought about his actions and choices, he wouldn't have done it any other way. If purely mechanical beings were capable of feeling gladness, that's how he would have described it. Satisfaction might suffice as well. 16 was just glad he had been able to spend so much time with 17 and 18.

"Do what you wish with me, Vegeta. But I implore you, do not allow Cell to take away the freedom of my friends! He is evil and they are good!" 16's mechanical voice was impassioned, even for a droid. He wondered what would happen to him if he were to be destroyed—would he ever be repairable? It didn't matter now, his fate was sealed. He just couldn't help but wonder.

"I have made my decision, android!" Vegeta's voice was harsh. "I will destroy Cell in the end, no matter what. Right now, my battle is with you!"

16 braced himself, but his sensors were malfunctioning; that last blow had messed with his detection abilities. Before he knew it, Vegeta appeared directly behind him with a powerful kick that threw him flat against the ground.

"Ever since you tried to cripple me, I've been working out the perfect way to wreak vengeance on you. This is the end for you, machine!" He rose into the air and extended both hands together in front of him, his fingers curling around a silvery ball of energy. Lightning crackled around his wrists. "BIG BANG FLASH!"

A golden translucent wave shot out from his body, followed a split second later by the white-hot ball of energy. The wave, an electromagnetic pulse just like the one that had formerly stunned 17, instantly fried 16's circuits; the energy attack struck him with tremendous force, more concussive than explosive. 16's body was flung across the ground, torn almost completely in two.

The androids, 16's only friends in the world, were too busy fighting for their lives to even notice.

- Bringer of Death Chapter 44