How Do You Calculate Battery For Lights?
Batteries are used for providing direct current (DC) electrical energy to electrical devices. Determining which battery is appropriate to power the electrical device is important, because if the battery cannot provide enough electrical energy (voltage or current), the device will work poorly, if at all. To determine the appropriate battery for an electrical circuit (such as to power electrical lamps), the total circuit electrical load (voltage requirements and total current needed) must be calculated. Calculations can be made by using two electrical relationships multiplied by a time factor; one relationship is called Ohm’s Law, the other is Watt’s Law. Ohm’s Law states that voltage equals resistance (in Ohms) multiplied by current (in amperes, or amps). Watt’s Law states that power (in Watts) is equal to voltage multiplied by current. Look at the electrical rating on each of the lamps. Write down the wattage rating of each lamp. Add the two wattage ratings together, and divide by the
