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1. lithium-ion battery (Most laptop battery is lithium-ion battery )provides 300-500 discharge/charge cycles and lithium-ion laptop battery in use typically lasts between 2-3 years. The capacity loss manifests itself in increased internal resistance caused by oxidation. Eventually, the cell resistance reaches a point where the pack can no longer deliver the stored energy although the battery may still have ample charge.

2. Keep the lithium-ion laptop battery cool. Avoid a hot car,and Also, batteries should not be kept near extreme heat or in sunlight; this is very likely to cause damage to the battery. For prolonged storage, keep the laptop battery at a 40% charge level. If you have a spare notebook battery, use one to the fullest and keep the other cool by placing it in the refrigerator. Do not freeze the laotp battery. For best results, store the laptop battery at 40% state-of-charge.