Parabatteries are active-matrix power storage devices that are used in vehicles, computers and robots. They vary in size from a fist-sized cube, to one cubic meter block. The cost to recharge a parabattery at a commercial recharging station is equal to the amount of the SEUs being recharged, times 5 cr. Unlike Power Beltpacks and Backpacks, parabatteries are not equipped with multiple ports for quick connections, instead, they must be linked to devices through dedicated connections. New Parabatteries are commonly sold fully charged.