60 Ah refers to 60 amp hours, which represents 20 hours of capacity.
Ah refers to the product of discharge current (A) and discharge time (h).
The meaning of 12V 60AH battery:
This 12V battery can discharge for 1 hour when the output current is 60A. We can then calculate 60A*12V. =720W, that is to say, an electrical appliance with a power of 720W can be used for 1 hour. Then your electrical appliance is 200W, 720W/200W = 3.6 hours So theoretically it can be used for 3.6 hours.
DC 12V is boosted to AC. 220V booster equipment has a certain heat loss. As far as I know, the efficiency is usually around 85%. Then it takes 3.6 hours * 85% = 3.06 hours.
So if the battery has a full capacity of 60 Ah, a 200 W device should be enough for 3 hours of use .
InformationDetailed ns:
The battery capacity is divided into actual capacity, theoretical capacity and rated capacity according to different conditions. The formula for calculating the capacity of battery C is C=∫t0It1dt (integrate current I from t0. to t1). The battery is divided into positive and negative poles.
When the quantity of active material is constant, the geometric surface of the plate in direct contact with the electrolyte increases, and the capacity of the battery increases. Therefore, the geometric size of the plate has an impact. the capacity of the battery which cannot be ignored.
①The influence of the thickness of the plate on the capacity
With a certain amount of active material, the capacity of the battery decreases as plate thickness increases. The thicker the plate, the smaller the contact area between the sulfuric acid and the active material, the higher the utilization rate of the active material.lower, the smaller the battery capacity.
②The impact of plate height on capacity
In the battery, the use of active materials in the parts upper and lower plate There is a big difference in the rate. The experiments confirmed that at the beginning of the discharge, the current density in the upper part of the plate. The plate is about 2-2.5 times larger than the bottom. This difference gradually decreases as the discharge progresses, but the upper part is greater than the lower part. The current density is large.
③The influence. of the surface of the plate on the capacity
The quantity of active material is constant, the larger the geometric surface of the plate, the higher the utilization rate of the active material, and the greater the Battery capacity is large. the battery shell is the same and the quantity of active material remains unchangeded, using thin plates to increase the number of plates increases the effective reaction area of the plates, thereby improving the utilization rate of active materials and increasing the battery capacity.
Reference materials:
Baidu Encyclopedia - Battery Capacity