At 5P, a 4A charger isn’t a “fast” charger despite what sellers claim. It’d be a super-fast charger at 1P or a fast charger at 2P. At 5P, it’s technically a slow charger.
That being said, I also prefer a 2A charger because if you don’t need it charged faster, why put extra wear on the cells? Especially if you have more than 1 skate or don’t skate that often or far.
Evolve used to sell a really good one, but they no longer do. It was my favorite, you may be able to find the old Evolve “2A” charger used somewhere.
Metroboard has one that isn’t as good as that one was
If you want a 4A version, Metroboard has the best 4A imho, and it’s the same one Evolve sells and the same one enertion used to sell.
Another 2A variant that’s good (but takes 2 months to ship) is the YZPower 42V 2A charger with the 5.5mm x 2.1mm plug.
Note that “10S 36V” means 42V, and these are all 42V chargers.