Razor E100 Electric Scooters Red "scooter charge" Questions

...Scooter on a block so the rear tire is raised. Remove the standing plate to reveal the battery compartment. Charge the Unit completely 1. Using a multimeter measure the voltage across the batteries. ...

Don't charge. when plug on the red light never blinks and never gets green. What should I do? I bought it 10 months ago. But in my country there is no costumer service for it. There is no customer ...

When charging the battery should the scooter been turned on or off Turned OFF.