My product started Misbehaving after 10 months of use. Got replaced with the refurbished 1 from the service centre. Was expecting new product.. Bt the product works fine.. Only thing to remember while using product is.. Don't fully discharge.. Use upto 40% and then charge it again to 100%.. If used till 0% then product won't last longer.. Battery life reduces.. Keep in mind that before using the product make sure you charge it for 15 minutes atleast to boost the charging.