I recently purchased an Ideapad z510. When using 'conservation mode" found in the energy management application, I notice that the charting stops at 55-60% and the message "plugged in not charging" is displayed.
Is this correct? What is the purpose of this mode? Does this feature work even when the system is off and plugged in?
This mode in energy manager affects the firmware on the battery, and stops the charging when it reaches 60%.
In some cases, not charging the battery to 100% constantly may improve the overall lifespan of the battery with the trade off being that you will have less run time on a charge because you are only using 60% of the battery capacity.
This setting is most often suggested for a system that is always Plugged in to the Ac adapter,
When the AC adapter is still connected and the battery reaches its charge limit, you will see a "Plugged-in not charging" message when you hover on the battery icon in the notification area. Since the firmware is set, this should still work even if the system is off and just plugged in.
This feature exists on other models and the start / stop thresholds and displayed messages may be slightly different depending on model and version of energy manager.