The Sony Xperia XA Ultra is powered by a 2,700mAh battery with Qnovo's adaptive charging tech. Qnovo prolongs the battery life measured in charge cycles, but it doesn't magically make the small battery last long when powering the huge screen. To be fair, the XA Ultra does pretty okay - you can get around 8 hours of web browsing and watching videos. The Endurance rating is 55h, good enough to last two days of moderate usage. This phone helped the Xperia line save face after the somewhat mediocre results of its last two phones. Even so, large phones are workhorses. Our favorite...
Source: http://www.gsmarena.com/sony_xperia_xa_ultra_battery_test-news-19556.php
