T420s drains battery when turned off

Hi,
I am changing my T400s to T420s and during setup of a new machine I got some strange sindrom. T420s uses battery when it is turned off. To check yesterday afternoon I put on post-it note that it had 86% battery and this morning when I turned it on it was on 67% battery.
I turned off always on USB when power off.
Any ideas what is draining battery?

1. automatic updating or backup
2. other scheduled tasks
3. wake on lan
4. fingerprint reader
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My TPs: Twist 2HU: i5-3317U Win 8 Pro, 4GB RAM 250GB Samsung 840 | T420 4177CTO: i5-2520M, HD+, Win 7 Pro x64, 8GB RAM, Optimus, 160GB Intel 320 SSD, Intel 6300 WiFi, BT 3.0 | T400 2764CTO: P8700, WXGA, Win 7 Ult x64, AMD 3470, 8GB RAM, 64GB Samsung SSD, BT, Intel 5300 WiFi | A20m 14.1" PIII 500 (retired). Monitors: 2x Dell U2211h IPS 100% sRGB calibrated w/ Spyder3.

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Battery Information:
Model Information:
Serial Number:          -------------------------
Manufacturer:          SMP
Device name:          bq20z451
Pack Lot Code:          0000
PCB Lot Code:          0000
Firmware Version:          0201
Hardware Revision:          000a
Cell Revision:          0158
Charge Information:
Charge remaining (mAh):          6643
Fully charged:          Yes
Charging:          No
Full charge capacity (mAh):          6643
Health Information:
Cycle count:          33
Condition:          Normal
Battery Installed:          Yes
Amperage (mA):          0
Voltage (mV):          12498
System Power Settings:
AC Power:
System Sleep Timer (Minutes):          0
Disk Sleep Timer (Minutes):          10
Display Sleep Timer (Minutes):          2
Wake On AC Change:          No
Wake On Clamshell Open:          Yes
Wake On LAN:          No
Current Power Source:          Yes
Display Sleep Uses Dim:          Yes
GPUSwitch:          2
Battery Power:
System Sleep Timer (Minutes):          3
Disk Sleep Timer (Minutes):          10
Display Sleep Timer (Minutes):          2
Wake On AC Change:          No
Wake On Clamshell Open:          Yes
Display Sleep Uses Dim:          Yes
GPUSwitch:          2
Reduce Brightness:          Yes
Hardware Configuration:
UPS Installed:          No
AC Charger Information:
Connected:          Yes
ID:          0x0100
Wattage (W):          85
Revision:          0x0000
Family:          0x00ba
Serial Number:          0x00c4130e
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