I have been using the NOEIFEVO 54.6V 4A charger for my 48V e-bike for some time now and am really satisfied.
Very good charger. It charges significantly faster than many other standard chargers at 4A. It remains quiet and does not get hot. The processing is solid, and the LED display is practical because you can immediately see whether the battery is still charging or is already full. Clear recommendation for e-bikes or scooters.