For that, we'd suggest you to please visit the nearest authorized service center of Hero Motors as they would be able to assist you with the exact price and availability of the spare parts.Follow the link and select your city accordingly for service centers.
For this, we would suggest you walk into the nearest authorized service centre as they will be the better person to assist you. You can click on the following link to see the details of the nearest service centre and selecting your city accordingly - Service centre
For this, we would suggest you walk into the nearest dealership as they will be the better person to assist you. You can click on the following link to see the details of the nearest dealership and selecting your city accordingly - Bike Showrooms
For the availability of and prices of the battery and motor, we would suggest you walk into the nearest service centres as they will be better people to assist you. You can click on the following link to see the details of the nearest service centres and selecting your city accordingly - Service centre.