Dell Alienware M17x R3 (Early 2011) - Manual (Page 49)

CHAPTER 3: USING YOUR LAPTOP
47
Battery Pack
Your laptop is equipped with a high‑energy rechargeable lithium ion (Li‑ion) battery pack.
Battery life will vary depending on your laptop configuration, model, applications installed,
power management settings, and features used. As with all batteries, the maximum capacity
of this battery will decrease with time and usage.
The battery meter lights on the battery pack indicate the charge level of the battery. When
you press the battery meter once, the charge level lights illuminate. Each of the five lights
represent approximately 20% of the total battery charge. For example, if four lights turn on,
there is 80% of battery charge remaining and if no lights turn on, there is no charge remaining
in the battery.
1 Battery Meter
1