What is the total operating time of the LBB battery?

• A. 12 hours
• B. 15 hours
• C. 18 hours
• D. 10 hours

Answer: (B)

Operating time is the duration the battery can sustain its required output under the specified conditions. The LBB battery has a rated endurance of 15 hours under standard operating conditions, which is why that option is the best choice. The rating comes from the battery’s capacity and the discharge rate used for the specification; drawing more current or operating outside the standard temperature range will reduce that time, while conditions that match the standard rating yield the 15-hour endurance. The other times would imply non-standard loads or conditions beyond what the specification guarantees.