Ninebot D28U
The Ninebot D28U is a budget scooter made by Ninebot.
It is the middle end of the Ninebot D Series, with the larger model being the Ninebot D38U, while the smaller model is the Ninebot D18U.

The U signifies this as a regional version, with the others being the Ninebot D28E and Ninebot D28J.
Specifications
Original specs via Segway.
| Net Weight | Approx. 34 lbs (15.4 kg) |
| Max Rider Weight | 265 lbs (120kg) |
| Max Speed | Approx. 15.5 mph (25 km/h) |
| Advertised Range | Approx. 17.4 miles (28 km) |
| IP Rating | IPX5 |
| Charge Time | Approx. 3.5h |
| Battery Voltage | 36 VDC |
| Charging Voltage | 42 VDC |
| Charging Temperature | 32–104°F (0–40°C) |
| Battery Capacity | 7650 mAh / 275 Wh ** Note the product page claims 7650Ah but we can assume that was a typo |
Modding
This model does not have any custom firmware support from ScooterHacking at the current moment.