How long will a 5000mAh, 5V battery last with 2W usage?

Question

5000mAh = 5Ah; Energy = 5Ah × 5V = 25Wh. At 2W usage, Time = 25Wh ÷ 2W = 12.5 hours.

GKToday Admin · Accepted Answer

12.5 hours 5000mAh = 5Ah; Energy = 5Ah × 5V = 25Wh. At 2W usage, Time = 25Wh ÷ 2W = 12.5 hours.

Current Affairs