An alkaline cell having an anode comprising zinc, an aqueous alkaline electrolyte, a cathode mixture comprising cathode active material comprising copper oxide or copper hydroxide. The adjustable bar includes a main cylinder head pivotably attached at a first pivot to the adapter, the main cylinder head having an opening configured to receive a main cylinder rod slideable within the main cylinder head’s opening and can be locked in place using a lock to form a suitable length. The side plates are secured to each other by screws or rivets.