Samsung Galaxy S4 Battery Life - Geekyranjit - YouTube
Samsung Galaxy S4 Review | Digital Trends
XeonMobiles.com - ☄ Batteries are volatile. Batteries has it's cycle life. ☯ You've already achieved almost 90 percent of the maximum battery life theoretically after 8 months of usage! ☠ Chemical properties
Samsung's Galaxy S4 beats Apple's iPhone 5S for battery power | Daily Mail Online
Samsung Galaxy S4 (I337) - Charge the battery - AT&T
Samsung S4 wins both fastest smartphone and best battery-life in UK consumer group's tests
Samsung Galaxy S4 battery life tests are done, here's how it did