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Notable advancements have been made in longevity and safety while the capacity is increasing incrementally.

(See BU-603: How to Calibrate a “Smart” Battery) The following tables indicate stress related capacity losses on cobalt-based lithium-ion.

The 1500m Ah pouch packs are used in mobile phones.

Although a battery should deliver 100 percent capacity during the first year of service, it is common to see lower than specified capacities, and shelf life may contribute to this loss.

Internal resistance and self-discharge also play roles, but these are less significant in predicting the end of battery life with modern Li-ion.

Figure 1 illustrates the capacity drop of 11 Li-polymer batteries that have been cycled at a Cadex laboratory.

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