While charging the ev two wheeler it takes more time ? But while charging the mobile phone it charges quick Why ?

On 1st we need to know what is the battery :

               Battery which is placed in a closed chamber with two rods consider as anode ( + ) and cathode ( - ). When Electrons move from anode to cathode is electricity, when all the electrons moved from anode to cathode the battery remains null charge. To recharge the battery again the electrons in cathode should move to anode with some external power source.

There are many Types of rechargeable battery such as :

              Nickel cadmium,  Nickel metal hydride, Lithium ion etc.    Most of the electric vehicles contains Lithium ion battery.

The value of battery around :

                Mobile Phone battery : 4000Mah or 5000mah

                Electric two wheeler : 2Kwh or 4 Kwh

                Electric four wheeler : 30Kwh, 40Kwh etc

What is Mah, Ah, Kwh – Milliamp Hours, Amp hours, Kilowatt hours

The value of 1 Ah amp hour = 83.33 amp

Then value of 1 milli amp = 83,330 milliamp

Then how to calculate  1 kilowatt hour ; here for example 1kw * 1000 / 120v = 8.33amp

Now, how to measure in batteries

There are n number of electrons in a battery to measure those C ( coulomb ) is used

1 coulomb = 6.25 * 10^18 = 6.25000000000000000000

1 amp = 1 coulomb per second

1 hour = 3600 second

1amp hour = 1amp * 3600

         Then, get to 1st thing that mobile battery is 4000mah so 4000milliamp * 3600 = 14,400C

Bike battery 0f 4Kwh = 144,000,00C ( 1 crore, 44 thousand )

Car battery of 25Kwh = 900,000,00C ( 9 crore )

So, here it takes time to recharge the 9crore coulomb and 1 crore coulomb but its easy to recharge 14,000C

Now you understood why it takes time for bike and car as compare to mobile phones.

But here, why we are measuring in amp why we not using volt, because the high current AC current will be measure in volt, here dc the value is less and battery is not constant value so it cant measure in volt.