I would make up a small set of jumpers that you can plug into the battery tender pigtail. I have used such an adapter several times and it works just fine, and takes hardly any room to carry onboard your scoot. Easily fits into the small glovebox on the Majesty.
You can just splice in an extra length of wire to the alligator clip attachment that comes with most battery tender type devices. That makes a nice light-duty jumper that will very quickly charge your battery enough to start the scooter.
Note that you will need to make sure the polarity is correct. If you use that pigtail you will need to change the polarity markings by using red and black paint.
The WAGAN Self Charge Auto Jumper is large, heavy, and with no cig. receptacle on your Majesty, you would need to make some modifications in order to use it.