Batteries and cells, namely, [ dry cells, ] electrical cells, [ wet cells, ] [ solar cells ] [, fuel cells, galvanic cells ]; power controllers, battery chargers, [ battery testers, ] battery management units and cell management units, namely, battery and cell monitoring devices that may be attached in communication between a battery unit and an electric power distribution unit to monitor the performance of the battery and an electric power distribution unit, and operating software for use therewith, sold as a unit [, electrical power distribution blocks, electrical power distribution units, power distribution boxes, electrical distribution systems, namely, power distribution panels ]

[ Repair or maintenance of batteries and cells; repair or maintenance of power distribution or control machines and apparatus ]