Charging Speed Dropped

[GC79]

Hi everyone. 
Since having the 2020 Audi E-Tron 50 for 6 months, the charging has been constant at 7kw from my home charger. In the past week the charging rate has dropped to 4.8kw and never goes any higher. I’ve tried a public 7kw charging point and does the same 4.8kw charging speed. It is due a service and going in a 2 weeks time, but not sure if the indicator warning message would automatically slow the charging speed. 
Has anyone had the same issue and if so how was it resolved?

[cliffcoggin]

What was the state of charge when you began recent charging sessions? Are you aware that the charge rate will drop considerably as the SOC approaches 80%? It is usually said that it takes as long to charge from 10% to 80% as it does to charge from 80% to 100%.

[GC79]

I’ve had the battery percentage down to 20% and still not getting any higher than 4.8kw charging speed. Before it would do 7kw right up to a 80% and even between 80-100%. 

[cliffcoggin]

In that case I suspect a fault in the car.

[Anton8]

Cliff is quite correct in saying it takes as long to charge from 80% to 100% as it does to charge to 80%. Audi suggests that you don't charge beyond 80% though. Sounds to me it is a problem with the car also.