Things to consider if:

You are removing the battery while on AC power:

Pros:
• Preserves charge cycles.
• Keeps the battery temperature lower thus slowing the aging process.

Cons:
• Lose the battery as backup power during power outages and voltage drops.
• Unsaved work will be lost and data may be corrupted without backup power.
• UPS (uninterruptible power supply) needed to serve as backup power source.

Pros:
• Battery serves as backup power during power outages and voltage drops.
• More convenient for “grab-and-go” use.
• Battery doesn’t require sufficient warming time (as it would after being stored in the refrigerator).

Cons:
• Loss of charge cycles.
• Battery’s temperature is higher on AC power resulting in accelerated aging.

• Calibrate your battery with a full discharge every 30 charges to help the battery’s fuel gauge remain accurate. Run the battery down to the automatic cut-off point of your notebook before recharging.

• Avoid repetitive and regular full discharges. Li-Ion batteries will lose less charge capacity when partially recharged. Recharging at a 10 to 20% charge level is recommended.

• Disconnect the battery and store it in a cool, dry place. The optimal charge level is 40% for prolonged storage. Storing the battery with a low charge will result in permanent damage or battery failure.

• If you store your battery in a refrigerator, use a sealed plastic bag to keep moisture out. Allow the battery to warm to room temperature before using or recharging it.