If your scooter is not charging you probably need new batteries. You may need to purchase: (2) 12v 5AH SLA Batteries with an F2 connector. And F2 Connectors. Some options: Get (2) of these batteries*: http://amzn.to/2swDtxF

Or this 2pack of the brand I use in the video*: http://amzn.to/2rsmjSm

F2 connectors*: http://amzn.to/2rMNme0

Highly rated wire strippers (mine in the video are old and hard to find)*: http://amzn.to/2rzhXuF

Recommended Hex (allen) wrench set (comes with english and metric)*: http://amzn.to/2qIepTJ

*We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.