NOVELTY - The AA, AAA, AAAA, C or D alkaline battery (10) or primary electrochemical cell comprises a housing (18), a cathode (12) within the housing, an anode (14) deposited within an anode cavity, a separator (16) between the anode and the cathode, an alkaline electrolyte contacting the anode and the cathode, an electronically insulating protective layer deposited on a top surface of the cathode, and a gel deposited over the anode within the cavity. The cathode defines anode cavity, and the top surface of the cathode is adjacent to the cavity. The separator comprises a piece of separator material.    USE - Used as a AA, AAA, AAAA, C or D alkaline battery or primary electrochemical cell.    ADVANTAGE - The alkaline battery has improved lifespan and performance by minimizing the migration of anode particles and/or the direct contact between anode and cathode materials, and stable output voltage.    DETAILED DESCRIPTION - The AA, AAA, AAAA, C or D alkaline battery (10) or primary electrochemical cell comprises a housing (18), a cathode (12) within the housing, an anode (14) deposited within an anode cavity, a separator (16) between the anode and the cathode, an alkaline electrolyte contacting the anode and the cathode, an electronically insulating protective layer deposited on a top surface of the cathode, and a gel deposited over the anode within the cavity. The cathode defines anode cavity, and the top surface of the cathode is adjacent to the cavity. The separator comprises a piece of separator material wound into a sleeve having a longitudinal wall defining a cross-sectional shape corresponding to dimensions of the anode cavity, and notches at longitudinal end of the sleeve. The notches define segments, which are positioned radially inward relative to the longitudinal wall of the sleeve to define a transverse wall. The housing comprises a cell closure having a convex inside surface positioned above the anode cavity, and the transverse wall has a convex shape and abuts the convex inside surface. The sleeve has 25% overlap of paper based on the surface area of the sleeve, and the segments extend radially outward to define the protective layer. The protective layer comprises a washer shaped piece of separator material, a polymeric material resistant to potassium hydroxide, a layer of cross-linked polyvinyl alcohol, and a layer of ethyl vinyl acetate polymer or a vinyl acetate/ethylene copolymer. The polymeric material is polyamide based sealants and/or asphalt-based sealants. The layer of cross-linked polyvinyl alcohol is disposed on the top surface of the cathode and/or the anode, between the gel and the anode and/or on a top surface of the gel, and is cross-linked with boric acid. A gel material comprises electrolyte, and a gellant present within the anode. The battery (less than 2%) has the same structure as the battery experience voltage drop of greater than a 0.01 volts between a pre drop test open circuit voltage measurement and a post drop test open circuit voltage measurement. The battery (98%) has the same structure as the battery retain 95% of the capacity of the battery after a drop test. The drop test consists of dropping each battery six times from a height of 1 meter onto a concrete surface so that the battery lands twice on each end of the battery and lands twice along the side of the housing of the battery, and storing the battery after the six drops for 24 hours at room temperature prior to the post drop test open circuit voltage measurement and prior to determining the remaining capacity of the battery. An INDEPENDENT CLAIM is included for a method of making an alkaline battery.    DESCRIPTION OF DRAWING(S) - The diagram shows a cross-sectional view of a battery.    Battery (10)    Cathode (12)    Anode (14)    Separator (16)    Housing. (18)