cell: 3CELL
X540LJ-3H X540LJ-XX015T X540LA-1A X540LA-3G X540SC-1C X540LA-XX003T X540SC-3H X540YA-3F X540LA-XX021T X540SA-1C X540SA-3H X540SA-XX041D X540LJ X540LJ-3F X540LJ-XX001T X540LJ-XX044T X540LA-1C X540SC X540LA-3H X540SC-3F X540LA-XX004T X540YA-1A X540L X540SA-3F X540SA-XX012T X540SA-XX041T X540LJ-1A X540LJ-3G X540LJ-XX014T X540LA-3F X540SC-1A X540LA-XX002T X540SC-3G X540YA-1C X540LA-XX013T X540SA-1A R540L X540SA-3G X540SA-XX020T X540SA-XX085T X540LJ-1C X540S X540LA X540SA

Here are some tips to improve the battery life of your notebook

1. Charge the battery! Consider keeping it plugged in for 12 hours before you unplug.

2. Switch on the optimized battery or power feature. You'll find this option — sometimes referred to as max battery mode — in your laptop system's built-in power management control panel. You can select the option to reduce the amount of time your inactive laptop stays on before powering itself down and going to sleep.

3. Remove the battery and clean the metal contacts. Wipe them with alcohol, ideally every two months, to ensure that the power transfer between the laptop and its battery is as efficient as possible. Allow the battery to dry thoroughly before replacing it!

4. Unplug any laptop accessories you aren't using. Even if they're not in use, accessories drain power from the battery.