Lenovo Energy Management - Battery life on dual boot

Lenovo Energy Management - Battery life on dual boot

For nearly two years I was running only Ubuntu on my Lenovo G570 laptop.
Recently I changed to dual-boot with arrival of Windows 8.1 Preview. With
that I installed some Lenovo provided applications, prominent one being
Energy Management.

After few days of application usage, Energy Management suggested that I
use 'Optimized Battery Health', based on my usage pattern, to extend
battery life. After making this change the battery never charges beyond
50% (I'm always connected to a power source). My understanding is the
application controls charging and maintains constant battery level.
Whenever I boot into Ubuntu the same situation (battery never crosses 50%)
prevails there. What puzzles me is, there is no Lenovo application on
Ubuntu. For that matter I don't use any battery manager on Ubuntu other
than the default one.
On Ubuntu the battery status shows as 'charging' but the percentage does
not change. On Windows the status is 'Not Charging'.
I'm now concerned about the long term implications of using this option on
Windows. How does a Windows based rule apply on Ubuntu? Does Lenovo Energy
Management write something to battery firmware (I don't know about
firmwares, just a wild guess). What will happen if I remove Windows
altogether from my machine?