Energon grenade
From MediaWiki

Are you and your allies under heavy fire? Toss an Energon Grenade to create an area-wide healing effect. These beneficial bombs come in sets of two.
Fiction
Age of Extinction film

Hound carried at least two of these grenades on his lower torso. They were presumably used during his attempt to hold back Galvatron's infected KSI prototypes in Hong Kong. Age of Extinction
The Last Knight film
Hound threw one of his Energon grenades at Daytrader upon the latter's arrival to the junkyard. The Last Knight
Games
War for Cybertron (360/PS3/PC)
Energon grenades were carried by Scientist-class Transformers during the Great War. Transformers: War for Cybertron (360/PS3/PC)
Toys
Notes

- While all of Hound's weapons originally went unnamed in the films, concept artwork and weapons references used in Age of Extinction would confirm that the two grenades with glowing blue openings that store on his lower torso, are in fact Energon grenades.
- Being a physical prop, the Energon grenade that Cade Yeager and Joshua Joyce fight over doesn't have it's blue glow present.
- Not all of Hound's toys have his Energon grenades molded on him.

