Razor MX500 II Electric Dirt Bike II Kids

Picked up one for my son, who's 6 years old. website says 14 +, which is not true. It does have a cult following, though, with men and teens modifying them. They are hard to find parts for just fyi.
The only thing negative things I can say is the brake handles are reversed from a mountain bike (like he's used to), the power cuts when you apply brakes (will fix this), and brake levers are too far for him to reach with confidence (also fixing).
It says 45 min battery time. however, it's never even gotten low battery after 2 hrs of riding rougher terrain. Could be the weight difference.