The phone comes with a 2000mAh battery, and based on our experience, it will last you a full day with medium to heavy usage, including 1 - 1.5 hours of phone calls, two e-mail
accounts with push notifications, screen
at maximum brightness, playing some music and video clips, Twitter notifications and WhatsApp chats.
The TechRadar battery test, which involves playing a 90 - minute video
at maximum brightness with
accounts syncing over Wi - Fi in the background, drained 19 % from the M3's battery.