How can I extend the life of my computer's battery?
A radio transmitter consumes electric power as it sends and receives radio signals, so the battery in a portable computer with a wireless adapter will run down much faster than the same computer without the adapter. Fortunately, there are a few things you can do to keep the power drain down to an absolute minimum.
First, turn off or disconnect the adapter when you're not using it. If you're on an airplane or a train, or anywhere else where you're outside the range of a wireless signal, or if you're using the computer for some purpose that doesn't require network access, remove the PC Card adapter from its socket or unplug the USB cable. If your computer has an internal wireless adapter, turn it ...
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