Winter on the east coast can be very rough, you will have to buy a few things for your car
1. Snow Brush/ Ice Scraper You can buy this from Walmart if there is one around your area. Something his : http://www.promopeddler.com/Detail/39250/HP630F-3 So, you can just scrape off the ice from your windows instead of 用熱毛巾擦玻璃
2. Snow Shover : You will need it when your car is in a huge pile of snow.
3. Anti-Freeze Windshield Washer : Don't use water, you will not able to see.
電瓶should not be a problem if its relatively new. If you can't start your car, that means you need a battery. (Or your car's charger is not functioning)
水箱: If you bought your car here, it shouldn't be a problem. Whenever you go back to your dealer to do your maintenance, they would supply more chemcial into your radiator.
Lastly, enjoy your winter here
(P.S Sorry, I am using my work's computer, can't type chinese)