Ninebot D28J

The Ninebot D28J or D-AIR is a budget scooter made by Ninebot.

It is the middle end of the Ninebot D Series, with the larger model being the Ninebot D38E, while the smaller model is the Ninebot D18E.

The Ninebot D28J via Segway[1]. Note the included safety features such as the rearview mirror not present on other regional models.

The J on the end signifies that this is a Japan regional exclusive, with other regional exclusive models being the Ninebot D28D, Ninebot D28E and Ninebot D28U.

The Japan regional version seems to come with more attachments such as a rearview mirror, reflected in the heavier weight compared to other regions.

Specifications

Original specs via Segway Authorized Dealers.

Ninebot D28J

Net Weight	Approx. 38.1 lbs (17.3 kg)
Max Rider Weight	265 lbs (120kg)
Max Speed	Approx. 11.8 mph (19 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

ScooterHacking features more info on their Wiki Page.

Modding

This model does not have any custom firmware support from ScooterHacking at the current moment.