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What's the lifetime of a lithium smartphone battery?

How long should a smartphone battery survive if it's charged say once per day? A couple of years? Longer?

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JanSt / MOD  Dec. 19, 2011 at 16:07

The lithium-ion battery works on ion movement between the positive and negative electrodes. In theory, such a mechanism should work forever, but shelf life, cycling and temperature affect the performance. Because batteries are used under many demanding environmental conditions, manufacturers take a conservative approach and specify a battery life between 300 and 500 discharge/charge cycles. Life cycle testing is easy to measure and is well understood by the user. Some organizations also add a date stamp of three to five years; however, this method is less reliable because it does not include the type of use.

via the battery university

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