According to the Hillsborough County Sheriff's Department, the children were selling lemonade at a stand in their apartment complex on Wednesday.
Deputies said Deante Small, 18, and a 16-year-old girl approached the children and ordered lemonade.
A verbal argument started when one of the teens said they were not satisfied with the amount of lemonade poured in their cups, police said.
This angered one of the 9-year-old victims. He threw a cup of lemonade at the teens, according to deputies.
A police report states one of the teens pushed one of the children to the ground.
The teens are accused of stealing an iPod and taking a cup of cash worth $13.53 and spending it at Wal-Mart.
The teens ran but were later arrested by deputies. They were charged with robbery, battery and petty theft.
WFTS reports that Deante Small bonded out of jail Thursday night and now waits for his first appearance.