Romeo Power Saber power bank has an AC outlet for charging laptops

A company called Romeo Power has just launched its Saber battery for pre-order, promising it to be more versatile than any power bank you already have lying around. Whereas most power banks are limited to micro USB, Saber covers all of your needs: microUSB, USB-C, and, yes, an ordinary AC outlet for plugging in your ordinary laptop charger. Saber’s most …