A lithium battery pack with 5k Wh capacity is considered a high-capacity energy storage solution. It typically employs Lithium-ion battery technology which permits for high energy density. These packs are practical for home energy storage systems as they can accumulate excess solar energy generated during the day to be used at night. With a suitable battery management system, these batteries can assure range constraining safety issues while allowing control of the charge and discharge cycle. In terms of economic feasibility, the 5k Wh capacity makes it a sensible option for meeting residential energy needs.