Battery Life
Equipped with a removable 1830 mAh Li-Ion battery, the Lumia 635 provides a reasonable amount of endurance, with a stand-by time of up to 648 hours and talk time up to 14 hours on 3G networks. Music lovers will appreciate up to 58 hours of playback. Its endurance rating of 66 hours suggests solid battery performance for its time, especially given its modest hardware demands.