Are there any good quality or high end chargers that do have internal power supplies?
How many amps do you want to charge your battery at?
5 amps, 10 amps, 15 amps, even 20 amps?
The best chargers that have the power supply built into the charger are only
going to charge at 10 amps, (one is a dual port)give or take a few.
But, they are not going to be moderately priced.