I have purchased a Karizma R from Pratham motors in pune on 25/7/2012. I faced no problems for the first month but since then I am having battery issues. The bikes battery does not charge at night when the headlights are on. It only charges whenever they are off and only when the rpm is above 4000. I showed it in the showroom twice had the starter relay changed twice, had the battery changed but till date the problem has not been rectified. I am really dissapointed in it

Any help will be apprecited.
I didn't find the right solution from the Internet.
References:
https://www.heromotocorp.com/en-in/foru ... ?f=8&t=116
Thank you.