Equation for kW rating calculation in battery charger using taper method

Q.  What is the equation for kW rating calculation in a battery charger using taper method?
- Published on 29 Sep 15

a. kW = (N* Ah * 2.25 *0.225 * 0.8 ) / 1000
b. kW = (N* Ah * 0.25 *0.225 * 0.8 ) / 1000
c. kW = (N* Ah * 2.25 *0.225 * 0.6 ) / 1000
d. kW = (N* Ah * 2.25 *0.225 * 1.8 ) / 1000

ANSWER: kW = (N* Ah * 2.25 *0.225 * 0.8 ) / 1000

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