jesschin said:Hi there, I need some help in getting this calculation done. I need to find out the number of batteries needed to power 5 devices of 12V for 18 hours. The voltage of the battery is also 12. Power of battery is 9600 watts.
Please help. Thanks!
sorry, I don really get your point, LowlyPion. Can you explain further in depth? thanksLowlyPion said:Welcome to PF.
The real question is what is the load?
When you know the load - you know the amps.
When you know the amps needed you know the amp-hours needed.
When you know the amp-hours of the batteries ...
The formula is: Number of batteries = (Power needed x Time needed) / (Battery voltage x Battery capacity).
The power needed for 5 devices of 12V is calculated by multiplying the voltage (12V) by the number of devices (5). In this case, the power needed is 60 watts (12V x 5).
The typical battery voltage is 1.5V and the typical battery capacity is measured in ampere-hours (Ah). However, these values can vary depending on the type and brand of batteries being used.
The batteries will last for 18 hours, as stated in the question. This calculation assumes that the devices are using their full power for the entire 18 hours.
Some factors that may affect the accuracy of this calculation include the efficiency of the devices, the age and condition of the batteries, and any external factors such as temperature or usage patterns. It is always best to consult the manufacturer's recommendations for the most accurate results.