GSMArena labs: introducing a faster way to compare the battery endurance of phones – Droid News
KEYone top five in best battery life for Androids phones. - BlackBerry Forums at CrackBerry.com
First battery test of xperia 1 V by GSMarena + mark IV results for comparison : r/SonyXperia
Sony - Xperia - "The battery life has gone from excellent to amazing this year, and the Xperia 10 IV is a true battery champ.” – GSMarena With the World's lightest body