since i am not finding enough threads about battery.
here i am putting deep cycle solar battery.
this guide has proper information about deep cycle battery. you would don't regret it.
Welcome to the forum. You may want to take a minute to put your location in your profile so people know where you are later when you ask questions. It gives context to your posts and allows others to give you better answers.
Since you are in India, it is a bit different market from other countries. The FZ6 is a big bike there! I've traveled from Delhi to Mumbai several years ago and mostly saw 125/150 cc scooters and smaller motorcycles.
It would help if you shared which specific battery you have chosen to use. The stock battery is 10Ah and AGM. Many of the solar batteries are 100Ah and the smaller ones are LiFe, which is not always a good choice for motorcycles designed for AGM lead/acid batteries. Some work better than others, due to charging needs and built in converters, (or lack of them).