To fully charge a Segway PT (Personal Transport) from empty requires 8-10 hours, according to www.segway.com
Depending on the weight, riding style, and terrain, a single charge the i2 (Segway model more for indoor use) can support up to 24 miles/38 km of travel, while the x2 (Segway model for outdoor use, or a tougher terrain) can support a trip of up to 12 miles/19 km. In addition, batteries will recharge when traveling down hills.
The Segway was invented by Dean Kamen and was unveiled to the public on December 3, 2023 in Bryant Park (NYC). The first Segway Human Transporter used no brakes and did a nifty 12 mph.
For more on Segway, visit their website, also, check out the Top 11 Tips for a Successful Segway Experience at trekhound.com.