Distinguish Fast Charge 2.0

[Android Central Question]

I have a S10+. I bought the new 12V Duo Pad. When I place the phone on the larger wireless charger, it says Fast Charging...but it says the same on the smaller one. The battery charge times are similar, but that may be because the battery is not drained a great amount currently. I just want to be able to confirm it is working properly. Is there a way to tell if it is using Fast Charge 2.0? I bought this new charger....money I didn't need to spend if it just does the same Fast Charge I was already doing. I am sure this is the new model. It even has Fast Charge 2.o printed on that charger. Thanks.