Charger 53.6V 2A for Xiaomi Mi 4 Ultra e-scooter

Charger 53.6 V 2A for Xiaomi Mi 4 Ultra — fast and safe battery charging for your scooter

This is a replacement mains charger for the battery of the Xiaomi Mi 4 Ultra electric scooter, whose battery system charges at 53.6 V. The charger is a consumable part — the cable most often breaks at the connector, and the housing suffers from drops or moisture. Instead of the scooter standing unused, only the charger is replaced and the vehicle is ready to ride again.

Model SJT-125E with the marking Mi4-U delivers an output of 53.6 V and 2 A current, which means a charging power of 107.2 W. Before ordering, check the OUTPUT row on the label of the charger you currently use and compare it with the values in this description. This charger is not intended for models with 42 V chargers used on scooters with 36-volt batteries.

A wide input range of 100 to 240 V means the charger works on any standard European outlet, and the mains cable is detachable, so it is easy to replace or pack. The label explicitly prohibits outdoor use — the charger is used exclusively indoors.

Key features

Output 53.6 V / 2 A: charging power of 107.2 W for shorter waiting than with weaker lower-current chargers
Universal input 100–240 V: works on all European mains voltages, inside and outside Montenegro
Connector angle 90°: round DC connector with a bent angle reduces pressure on the cable at the point where it enters the scooter
LED indicator: signals that charging is in progress, so you don't have to watch the clock
Ribbed housing: black plastic housing with longitudinal ribs dissipates heat during longer charging
CE, FCC and RoHS certificates: the LPS marking (limited power source) guarantees safety in operation

Input	AC 100–240 V, 50/60 Hz
Model	SJT-125E
Output	53.6 V / 2 A
Housing	Black plastic with longitudinal ribs
Marking	Mi4-U
Indication	LED indicator
Mains cable	Detachable, two-pole European plug
Certificates	CE, FCC, RoHS
Manufacturer	Guangdong SanJiaTong Power Technology Co., Ltd.
Product type	Mains charger for electric scooter battery
Compatibility	Xiaomi Mi 4 Ultra (53.6 V system)
Charging power	107.2 W
Safety marking	LPS
Output connector	Round DC connector with center pin, 90°
Country of origin	China
Connector polarity	Center contact plus, outer ring minus

Frequently asked questions

Which scooter is this charger compatible with?

The charger is compatible with the Xiaomi Mi 4 Ultra scooter, which uses a 53.6 V battery system. It is not intended for models with 42 V chargers and 36-volt batteries.

What are the output specifications of the charger?

The charger output is 53.6 V and 2 A, giving a charging power of 107.2 W. Before ordering, check the OUTPUT line on the label of your current charger and compare it with these values.

What type of output connector and polarity does it have?

The output connector is a round DC connector with a central pin and a 90° angle, which reduces pressure on the cable at the scooter inlet. The polarity is central pin positive, outer ring negative.

Can the charger be used outdoors?

No, the label explicitly prohibits outdoor use, so the charger is to be used exclusively indoors.

What certifications and safety markings does the charger have?

The charger has CE, FCC and RoHS certifications, and the label also features the LPS (Limited Power Source) marking, which guarantees safe operation.