The above charger is in my VW T6 van. I use it to charge a Lithium battery. When switched on it has consistently delivered 30 amps to the battery, until my last journey that is. Initial output was 30amps but quickly dropped to a fraction of that amount (as I recall c4-5 amps).
The battery charges fine when connected to a Victron Mains 30 amp charger.
Any help in diagnosing the issue would be gratefully received (I would ask the supplier, but he has ceased trading).