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Does NFC drain battery?

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I couldn't find a thread on this and was just curious if NFC drains battery. If so, does it drain a significant amount or is it miniscule?

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10th July 2012, 12:17 AM |#2  
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Working on benchmarking that myself right now. Not sure yet.

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10th July 2012, 02:51 AM |#3  
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bump...good question
10th July 2012, 02:58 AM |#4  
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I haven't noticed any change with it in and off but there is no imperical evidence .. Just from what I've noticed...

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10th July 2012, 09:35 AM |#5  
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I'm going to test it out for the next few days and will post what i find.

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10th July 2012, 09:37 AM |#6  
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If it does burn any battery and I mean any I will be disabling it as I don't use it. If I ever need it I'll just enable it again. But until I hear that it takes any battery at all I'll leave it on.
10th July 2012, 08:20 PM |#7  
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No. NFC is completely off unless the device is on and unlocked when it is on consumption is very low.

They actually talked about this at IO as well - breaking down battery drain while the device was on and in use NFC accounted for 0.5% of power consumption (out of 100). Again this is while the device was on. Given that it's disabled when the screen is off you're looking at less than that averaged over regular use of the device.
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10th July 2012, 08:34 PM |#8  
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Quote:
Originally Posted by krohnjw

No. NFC is completely off unless the device is on and unlocked when it is on consumption is very low.

They actually talked about this at IO as well - breaking down battery drain while the device was on and in use NFC accounted for 0.5% of power consumption (out of 100). Again this is while the device was on. Given that it's disabled when the screen is off you're looking at less than that averaged over regular use of the device.

Thanks for the info. I have been using NFC all day and haven't noticed any difference in battery at all. 0.5% is hardly noticeable and disabling it would be pointless. With that said, I flashed a new ROM before clearing the data from Google Wallet so I likely bricked my GWallet anyway so it wouldn't make much difference to me anyway.

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