Exceptional range with two removable batteries 
The KOOLUX X9 choose Single or Dual Batteries with two removable 48V 15.6Ah batteries that provide exceptional range and flexibility for different riding needs. The bike supports both single and dual battery modes so you can customize your ride. In dual battery mode, the intelligent voltage balancer optimizes energy consumption between the two batteries, ensuring longer riding times and improved battery longevity.
Please note buying X9 single battery can not turn into Dual battery later