In a project, a Huawei video surveillance site uses a mains + lithium battery module solution to supply power to the camera. How long can the site run after the mains is disconnected?

In a project, a Huawei video surveillance site uses a mains + lithium battery module solution to supply power to the camera. How long can the site run after the mains is disconnected?
A . 15H
B . 2H
C . 10H
D . 5H

Answer: C

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