Thanks, by Googling for Aikema I found an extremely similar bike, I'd say it's the same one under a different brand name.
That one says:
battery: PORTAPOWER capacity 8,7Ah / 313.2 Wh
motor: AIKEMA Front hub motor, 36V, 250W
mode switch: TGK-36-WM
LCD: King-Meter LCD
By Googling PortaPower, I...