We have been collecting affiliate for electric scooter and repair service chain in Asia. We join the development of Lithium battery and charger.
Please try our product.

We can improve your scooter/roller features by Lithium battery,

1)weight: 30% of lead-acid, 5-6kgs
  allows you carry and charge it to the building.
2)charge time: 2 hours for 50km
3)product life: 2000 times of charge (8 years)
4)total capacity can upgrade to 100km range
5)reliability & safty concern: better

URL//carbase.4cmart.com/
//4cmart.com/intvisio/Distribution.htm

Howard
IntVisio Technology, Inc.