DETERMINATION DEVICE, DETERIORATION DETERMINATION SYSTEM, WORK ASSISTANCE DEVICE, DETERIORATION DETERMINATION METHOD, AND COMPUTER PROGRAM

A determination device (1) includes: an acquisition unit (11) that acquires determination information for determining a degree of deterioration or guarantee of a lead-acid battery (3); a determination unit (11) that determines the degree of deterioration or guarantee of the lead-acid battery (3) by referring to a database (142) that stores the determination information and the degree of deterioration or guarantee of the lead-acid battery (3) in association with each other based on the acquired determination information; and an output unit (11) that outputs a result determined by the determination unit (11).