How should I choose between two batteries with different Watt hours (Whr) available?

How should I choose between two batteries with different Watt hours (Whr) available?

Higher Watt hours (Whr) on the same system under the same operating conditions will generally deliver longer battery run time. For example, if you compare the same system, running the same applications, the 53Whr battery would provide approximately 65% more run time than the 32Whr battery

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