The Kaabo Wolf King has a great feature to charge your scooter with two battery chargers simultaneously to reduce the charge time.
Or if you are after a spare charging unit.
Charger specifications are:
|Input Voltage||100 - 240 V AC|
|Turn Lamp Current||200-400ma|
|No Load Voltage Range||72V|
|Output invariable current range||1.8a - 2.5a|