This is the upgraded optional battery for the PT60X Series.
This is 2 sepearate 10.5 AH battteries with its own Battery Management System
This add Double redundancy for more safety and offers more torque. These batteries can be charged with the original charger and take 5 to 7 hours to charge. They can be installed by the customer. Note: these batteries are built to order an require 5 to 10 days to complete.