I'm glad you like the Radius.  You cons though, are not cons for me.  A single 18650 battery lasts me 2 full days, but then I don't vape above 9.8 watts.  Once you understand why the battery meter calculates the remaining charge, maybe you'll come to appreciate why it's a more intelligent system.  On the slow charging, it's that way for a very good reason.  Charging 
batteries fast is not good for them, and in fact diminished their lifespan.  Slower charging on your Radius is by design.
Blah. Charge my battery quick I could care less if it's shortens the life of the battery.  Why not a standard charge ans a turbo charge setting.  Price of a new battery is pocket change. I usually vape between 9 and 15watts. I don't think this will last a full day. And the battery graph. Why not have a way to see the actual numbers coming from the battery. Somewhere in the menu. 
Open a ticket with Provape.  Unfortunately, you got one of the bad capacitors.  To open a ticket:
www.provape.com
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You will hear from Provape, typically very quickly, but this is Saturday, so it's possible you won't hear from them until Monday.
Pretty Gnees.  I know what it's like to be 2nd fiddle.  Emi and Eri adore Charlie.