In a regulatory filing, US-based battery maker Ener1 said it was taking a $35.4m charge for loans to Think "based on the announcement by Think Global that, following an extended and ultimately unsuccessful search for long-term financing, it will file bankruptcy proceedings in the Norwegian courts on June 22".

Think Global, a Norwegian electric-car maker, has fallen into bankruptcy for the third time and 13 months after raising a further $40m from venture capitalists and corporate venturing units.

In a regulatory filing, US-based battery maker Ener1 said it was taking a $35.4m charge for loans to Think "based on the announcement by Think Global that, following an extended and ultimately unsuccessful search for long-term financing, it will file bankruptcy proceedings in the Norwegian courts on June 22".

Ener1 added:…