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Q: What is the life span of my Li-Ion battery?
The batteries should last about 2-3 years or 300-500 charge cycles, if you follow these guidelines:
*Charge the Li-ion often, except before a long storage. Avoid repeated deep discharges. *Keep the Li-ion battery cool. Prevent storage in a hot car. Never freeze the battery. *If you mostly keep your laptop at a fixed location where there is A/C power, you can run your system on A/C power only by removing the battery and storing it in a cool place. *Avoid purchasing spare Li-ion batteries to store for later use. Observe manufacturing date when purchasing. Do not buy old stock, even if sold at clearance prices. The batteries cycle life is based on the depth of discharge. Shallow discharges provide more cycles than deep discharges.
If the battery is stored fully charged and at elevated temperatures, this battery chemistry deteriorates to a 50 percent performance level in about one year.
Dell warranties their batteries for one year.
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