How often must batteries be tested?

How often must batteries be tested?

• A. Twice a year
• B. Monthly
• C. Every two years
• D. Once per calendar year

Answer: (D)

Backup batteries must be tested regularly to confirm they will supply power during an outage. The formal test—typically a discharge test to verify the battery can deliver the required current for the system’s needed duration—is conducted once per calendar year. This annual cadence balances catching aging or failing cells with avoiding excessive wear and unnecessary service. In addition to the annual discharge test, technicians often perform monthly visual checks and indicator verification, but the full capacity test is scheduled annually. Therefore, testing once per calendar year is the standard requirement.

Backup batteries must be tested regularly to confirm they will supply power during an outage. The formal test—typically a discharge test to verify the battery can deliver the required current for the system’s needed duration—is conducted once per calendar year. This annual cadence balances catching aging or failing cells with avoiding excessive wear and unnecessary service. In addition to the annual discharge test, technicians often perform monthly visual checks and indicator verification, but the full capacity test is scheduled annually. Therefore, testing once per calendar year is the standard requirement.