Electric Bike Tester, Brushless Motor RC Car And ESC Tester E-bike Scooter Vehicle Brushless Motor Controller Testers 24V 36V 48V 60V 72V

i have been using a high end electric bicycle as my main transportation for several years. received decent in warranty service until said warranty expired. after that the dealer wouldn't even take my bike in for PAID service stating that every component of my $3,300.00 bike was obsolete therefore not serviceable. after almost a year of burning hydrocarbons i ran across a similar device being sold for over $100. spent some time surfing ,found this one. this device that costs less than $20 and a $35.00 chinese controller gave me the ability to put my $3,300.00 "obsolete" bike back in service.

Poor instructions cheap quality

How do I use this with no instructions?

Grreeaatt!!