Im getting same on both apps ‘Battery Partially Charged’. Happened today.
a-ho... have you update your MercedesMe app ? get a voltage meter to test the voltage of battery. i tested after about 30min drive, i got 12.4v, but when i connected my charger, the voltage gose to 12.85, which is very good, from now on, i need to keep it connect it. otherwise, battery might become bad after 3-4 years