Xtreme Power has raised $5.7 million of a $10 million offering, according to papers on file with the Securities and Exchange Commision.
The Austin-based company, founded in 2004, designs, manufactures and installs batteries and power management systems for utility companies. It has 100 employees, according to the Austin Business Journal.
Since launching, Xtreme Power has received $36 million from investors, the Austin Business Journal reports.