1. sharting's Avatar
    I activated Cortana yesterday and my battery is draining like crazy (about 13% per hour). This morning I deactivated her and the battery consumption immediately dropped to 2% per hour.
    Anybody else has this issue (I have a Lumia 1020)?
    04-15-2014 05:25 AM
  2. adesonic's Avatar
    Similar problem Lumia 920, changed my region code and language to USA to get cortana, upon reboot everything worked but the battery was getting absolutely hammed dropped 50% in 3 hours!

    Have since changed back to UK settings (losing Cortana) and battery is behaving reasonably well again
    04-15-2014 05:31 AM
  3. marratj's Avatar
    For me it fortunately only drains when Cortana is active (in foreground and doing stuff for me). I can see this in Battery Sense, Cortana Active Time is the biggest battery hog there, whereas Cortana in background doesn't need more than other background tasks.

    Lumia 1020.
    04-15-2014 07:50 AM
  4. quantum tao's Avatar
    For me it fortunately only drains when Cortana is active (in foreground and doing stuff for me). I can see this in Battery Sense, Cortana Active Time is the biggest battery hog there, whereas Cortana in background doesn't need more than other background tasks.

    Lumia 1020.
    battery sense is not telling the whole story.
    04-15-2014 07:57 AM
  5. DigitalZ's Avatar
    I activated Cortana yesterday and my battery is draining like crazy (about 13% per hour). This morning I deactivated her and the battery consumption immediately dropped to 2% per hour.
    Anybody else has this issue (I have a Lumia 1020)?
    I too have a 1020 and yesterday with a lot of playing with Cortana in the foreground my phone drained quickly and I had to charge it well before the day was up. Today I decided to leave her be for a while and I have seen the battery usage be much less. I've gone from 100% to 82% in about 8 hours with Cortana primarily in the background.
    04-15-2014 12:33 PM

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