April 24, 2013 4:32 am New Battery Packs Store Green Energy New battery packs could help return power to the electrical grid. KGW’s Keely Chalmers reports. US & World Videos 1:43 World reacts to death of Iran's president 1:58 ICC seeking arrest warrants for Israeli and Hamas leaders 1:07 Cargo ship that crashed into Baltimore bridge moving back to port 5:30 Jake Gyllenhaal sings Boyz II Men During ‘SNL' season finale 2:17 Diddy breaks silence on Cassie assault video