B2 is useless piece of crap. You can only transfer 25k INR through it.
Edit: it's not available anymore for new customers.
Which is what makes it the absolute best type of account for newbie traders. I personally never encountered the cap because I never let my individual transaction volume exceed 20k.
PS: You can get new B2 accounts by filling out the form in the branch. The city has to support b2 banking though.