Scooter D99
Scooter D99: After a few month of light use, 100 km, the battery was totally destroyed (0 volt on voltmeter...) and doesn't charge any more. Despite been still in warranty period, when I contacted service/duotts.com, they royally offered me 20 euros to cover the repair costs while implying that I was trying to steal a battery. Don't trust any answer added to this post, if you buy from Duotts and have a problem, you will lose your money.