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 laptop 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.