Tactical Advice

Staying Alive

Learn how to properly calibrate your notebook battery and get more juice from a single charge
This story appears in the March 2009 issue of BizTech Magazine.

Like all rechargeable batteries, a notebook computer battery’s ability to hold a maximum charge will decrease over time or with use.

Lithium-ion batteries used in notebook computers typically have a lifespan of 300 to 500 charge cycles. After a year of use or 300 charge cycles, a Lithium-ion battery holds only about 80 percent of its original capacity. But there are ways to extend a notebook battery’s life, which reduces the need to buy additional batteries, which in turn is good for the environment.

First, conserve battery power by reducing power consumption on your notebook. Hewlett-Packard recommends several steps, such as keeping the computer cool (between 65 and 77 degrees Fahrenheit). You can also try adjusting screen brightness, removing peripherals and lowering processor speed.

Second, because high temperatures accelerate the deterioration of Lithium-ion cells, keep the notebook away from prolonged exposure to heat (for example, don’t leave it in your car on a warm day). Also, remove the battery if the notebook is turned off and not plugged in to an AC adapter for more than two weeks — or if the notebook is plugged in to AC power continuously for more than two weeks.

Does your company
teach end users how to properly calibrate the battery upon receipt of a new notebook computer?

12% Always
17% Sometimes
8% Don’t know
63% Rarely

Source: CDW Poll of 292 BizTech readers

Third, calibrate the battery. When users power up in fits and starts and then recharge without fully draining the battery, it reduces the amount of power available in a single charge cycle and can render the battery meter inaccurate.

There are four steps to calibrating a battery:

  1. Disable power management in the Microsoft Windows operating system and select “always on” in the power scheme. That prevents the notebook from going to sleep.
  2. Connect the AC adapter to the notebook and charge the battery until the meter says it’s at 100 percent.
  3. Remove the AC adapter and drain the battery until the notebook shuts off.
  4. Reconnect the AC adapter, charge the battery and then turn Windows power management back on.

Last, Lenovo Master Inventor Howard Locker advises against leaving a notebook always plugged in. “The battery will last longer if it charges and discharges, so you don’t want it 100 percent charged all the time,” he explains. “Once in a while, let the battery drain.” But contrary to popular opinion, he says, it does not have to drain completely the first time it’s used.

Sign up for our e-newsletter

Security

Why Cloud Security Is More E... |
Cloud protection services enable companies to keep up with security threats while...
Securing the Internet of Thi... |
As excitement around the connected-device future grows, technology vendors seek ways to...
Tools to Maintain Mobile Sec... |
Far-flung devices pose serious challenges, but a variety of technologies can help protect...

Storage

The New Backup Utility Proce... |
Just getting used to the Windows 8 workflow? Prepare for a change.
How to Perform Traditional W... |
With previous versions going unused, Microsoft radically reimagined the backup utility in...
5 Easy Ways to Build a Bette... |
While large enterprises have the resources of an entire IT department behind them, these...

Infrastructure Optimization

Why Cloud Security Is More E... |
Cloud protection services enable companies to keep up with security threats while...
Ensure Uptime Is in Your Dat... |
Power and cooling solutions support disaster recovery and create cost savings and...
The Value of Converged Infra... |
Improvements in security, management and efficiency are just a few of the benefits CI can...

Networking

Securing the Internet of Thi... |
As excitement around the connected-device future grows, technology vendors seek ways to...
How to Maximize WAN Bandwidt... |
Understand six common problems that plague wide area networks — and how to address them.
Linksys Makes a Comeback in... |
The networking vendor introduced several new Smart Switch products at Interop this week.

Mobile & Wireless

Now that Office for iPad Is... |
After waiting awhile for Microsoft’s productivity suite to arrive, professionals who use...
Visualization Can Help Busin... |
Companies need to put their data in formats that make it consumable anytime, anywhere.
Linksys Makes a Comeback in... |
The networking vendor introduced several new Smart Switch products at Interop this week.

Hardware & Software

Visualization Can Help Busin... |
Companies need to put their data in formats that make it consumable anytime, anywhere.
The Tools That Power Busines... |
Ever-evolving analytic software can greatly improve financial institutions’ decision-...
XP-iration Date: Today Is th... |
It’s officially lights out for Windows XP as an operating system. Here’s how the world is...