How to Turn On Extreme Battery Saver Mode on Windows
To stretch the battery as far as possible when charge is running low.
When the battery is very low and you need to stretch it as far as possible, extreme battery saver reduces consumption more aggressively than normal battery saver.
- Click the battery icon in the taskbar.
- Turn on "Battery saver" — it gets suggested automatically once the battery drops below a certain threshold, but you can turn it on manually beforehand.
This mode reduces brightness, pauses background syncing, and limits non-essential notifications — meant to maximise remaining time, not for normal use of the machine.
Note: some background tasks (like email syncing) may pause while this mode is active — that's expected behaviour, they resume once you turn it off or plug in the charger.
Frequently asked questions
Does extreme battery saver affect processor performance?
It can limit it on some machines, prioritising battery life over speed — it isn't the right mode for demanding tasks, only for stretching the remaining time.
Does it turn off just by plugging in the charger?
Yes, it normally turns off automatically once you plug the machine into power, going back to whatever power mode you had set before.