Trump's Powell diatribe weighs on the Dow

The Dow falls as tech stocks fall after President Trump slams U.S. Federal Reserve Chairman Jerome Powell for failing to cut interest rates. The dollar falls to a three-year low on tariff concerns. Chinese battery maker CATL unveils new cells, claiming faster charging times and longer range than rival BYD. Also in autos news, Tesla shares plunge 6 per cent ahead of earnings due out later today with one analyst calling the decline a ‘Code Red’ moment for the firm.