How can I charge up the battery? 15 March 2018 13:43 Updated Follow Make sure you use a USB compatible charger to charge your racket: Plug the USB cable into your laptop or into a plugged compatible USB charger Then plug it into your racket. Related articles How long does it take to fully charge my battery? My racket doesn't switch on, why? How will I know if my battery is fully charged? What type of battery is used in Babolat PLAY racket? My racket doesn't charge up, Why? Comments 0 comments Article is closed for comments.