I got my hyosung GT250R with 2000km done on it and 18 months warranty. After not riding for about a month, It wasn't starting because of a flat battery, a run start got it going. After charing the battery everything worked well for about a week, but yesterday the bike again did not want to start. I once again charged the battery but only got one good start out of it till it went back to not working. Is this a normal occurrence with motorcycle battery's? Is this something that will be covered by warranty? Whats the cost and a good place to buy a new battery?