Question

What is the Discharge Capacity of a Battery ?

Answer 1

Hint: If a battery is discharged veritably fleetly, also the quantum of energy that can be drawn from the battery is less as the discharge current becomes advanced. Hence, the battery is low power. A battery is a combination of cells with a positive and a negative terminal to grease an inflow of charge carriers (electrons) to induce electric current. The charge patches or electrons flow due to nonstop charging and discharging cycles generating DC current.

Complete step by step solution:
Battery capacity is generally expressed as a function of time where the total time taken by a battery to get fully discharged is called discharge capacity of a battery. In practice, no battery is completely discharged. The memorandum is used to specify battery capacity where C is the capacitance and x is the time in hours that it takes to discharge the battery. For e.g., means that the battery capacity is Z when the battery is discharged in 15hours. However, the battery capacity rises to Y, If the discharging rate is halved in this case while the time taken to discharge the battery is doubled to 30 hours.

The charge rate when discharging the battery in 10 hours is set up by dividing the capacity by the time. Thus, \[C/{\rm{ }}10{\rm{ }}\,or\,{\rm{ }}0.1{\rm{ }}C\] is the charge rate. A specification of \[C20/{\rm{ }}10{\rm{ }}\left( {\text{also written as }0.1{\rm{ }}C20} \right)\]is the charge rate attained when the battery capacity (measured when the battery is discharged in 20 hours) is discharged in 10 hours. Similar fairly complicated memos may affect when advanced or lower charging rates are used for short ages of time.

The charging rate, in Amperes, is given in the quantum of charge added to the battery per unit time (i.e., Coulombs/ sec, which is the unit of Amperes). The charging/ discharge rate may be specified directly by giving the current- for illustration, a battery may be charged discharged at 10A. Still, it's more common to specify the charging/ discharging rate by determining the quantum of time it takes to completely discharge the battery. In this case, the discharge rate is given by the battery capacity (in Ah) divided by the number of hours it takes to charge/ discharge the battery.

For illustration, a battery capacity of \[500{\rm{ }}Ah\] that's theoretically discharged to its cut- off voltage in 20 hours will have a discharge rate of \[500{\rm{ }}Ah/{\rm{ }}20{\rm{ }}h{\rm{ }} = 25A\]. Likewise, if the battery is a 12V battery, also the power being delivered to the cargo is \[25\,A \times 12\,V = 300\,W\]. Note that the battery is only theoretically discharged to its maximum position as utmost practical batteries cannot be completely discharged without either damaging the battery or reducing its continuance.

Note: Each battery type has a particular set of conditions and conditions related to its charging and discharging governance, and numerous types of batteries bear specific charging administrations or charge regulators. Likewise, the voltage and current during the charge cycle will be different for each type of battery. Generally, a battery bowl or charge regulator designed for one type of battery cannot be used with another type.