Inserting PC (PCMCIA) cards into the PowerBook 5300 or PowerBook 190 reduces battery life. This is more evident if the cards are active or in use. However, PC cards still draw some power when they are inserted and not in use. Most cards have two states, idle or in use.

Tips for Reducing PC Card Power Usage

• Eject the PC card. This is the best way to reduce power usage.

  The amount of power drawn by a PC card varies from card to card, and from manufacturer to manufacturer. You may want to swap PC cards with another similar PC card, or use a different brand of PC card if you think your current PC card is drawing too much power from the battery.

• Eject PC cards which are not needed.
• Plug your PowerBook computer into AC power rather than running from the battery. In most circumstances when you need to use a modem or network, there is a power outlet nearby. Apple recommends using the AC adapter, when AC power is available, to retain a full battery charge for times when external power is not available.

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