Micromax x272 charging show but not charging

Hi, so it telling you it's charging however the scooter shows no charge once the charger is disconnected ???

1. First of all , is it possible to try another charger ? or test on another scooter.

2. If the charger proves to be okay, it's starting to look like the fault is with the batteries themselves, batteries can fool certain chargers into thinking they being charged when it fact the resistance inside the batteries have become too great.. They need replacing,...

3. Another issue could be the charger socket or the charging circuit to the batteries..
( is there a fuse ? )

Regards
Rob

www.gewizrepairs.co.uk