Should I buy the Duo charger?

I have the Ather rizta z 2.9kwh variant. I am planning to purchase the Duo charger that's 700w. I originally got the 375w charger as I have the smaller battery option. The charge time for the current charger is too long ( 8+ hours). I just wanna know if the purchase would be good since my scooter is quite new and the current charger is working as it should.