Electrical adapters; Battery chargers; Chargers for electric batteries; Battery packs; Portable power packs in the nature of battery packs; Power banks for electronic devices, namely, battery charge devices; Electronic circuit boards; Printed circuit boards (PCBs); Development boards in the nature of circuit boards, namely, microcontroller boards and prototyping boards; electronic building kits comprising printed circuit boards (PCBs), batteries, battery charger, resistors, capacitors, induct...