Electric vehicle maker Fisker filed for Chapter 11 bankruptcy protection, the second electric startup to do so in the last year as even industry leaders struggle to lure more buyers beyond the early adapters of the technology.

Fisker Group Inc. said in a filing with the U.S. Bankruptcy Court in Delaware that its estimated assets are between $500 million and $1 billion. It estimated liabilities are between $100 million and $500 million, with between 200 and 999 creditors.