Question: what is 5 ah battery?
Answer: A 1 amp-hour battery will give you 1 hour of runtime at a 1 amp load, or 1/2 an hour of runtime at a 2 amp load. Similarly, a 5 amp-hour battery will give you 5 hours of runtime at a 1 amp load. With a 5 amp draw, that 5Ah battery will give you an hour of runtime.