Battery drain even when the MacBook is stopped

Does anyone know why my now stopped even when Macbook battery drains. I loaded my MacBook to 100% this morning and in the afternoon when I turned it on, I noticed a drop of 2% in the State of the battery. I thought that the device using no power when turned off? No difficulty in this issue? He is the model of MBP mid-2012.

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Perform a SMC reset and test again:

https://support.Apple.com/en-us/HT201295

Run Apple Hardware Test:

https://support.Apple.com/en-us/HT201257

Note that an error free AHT is inconclusive.

Ciao.

Tags: Notebooks

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