Shares of AeroVironment Inc. jumped more than 20 percent Wednesday, a day after the company reported fiscal fourth-quarter results that beat market estimates, helped by its higher sales in its division that makes electric-car chargers and battery testers.

After the Tuesday markets closed, the Monrovia company which also makes drone military aircraft, reported net income of $17.6 million (79 cents a share) for the quarter ended April 30, compared with $15.6 million (71 cents) a year earlier.

Revenue rose 7 percent to $106 million, with drone revenue up 7 percent to $106 million and electric-car related sales more than doubled to $15.1 million. At the end of the quarter, the company’s funded backlog was $82.9 million compared with $72.3 million a year earlier.

Analysts surveyed by Thomson Reuters on average expected the company to report per-share profit of 69 cents a share on sales of $99 million.

For fiscal 2012, the company forecast profit of $1.28-$1.35 a share, on sales of $321 million to $336 million. The Wall Street consensus is for adjusted per-share profit of $1.24 on revenue of less than $319 million.

Shares were up $6.06, or 21 percent, to $34.67 in Wednesday midday trading on the Nasdaq.