Vionx Energy: Woburn-based battery maker VionX raises millions in new funding

VionX Energy Corp., an under-the-radar energy storage company with some big names behind it, has raised $12.75 million in debt and equity funding, according to a document filed Wednesday with the U.S. Securities and Exchange Commission. That brings the Woburn company's total funding to at least $79 million, according to SEC filings. VionX did not respond to requests for comment. Previous investors in VionX, which was formerly known as Premium Power, include United Technologies Corp., VantagePoint...