2A or 4A charger for Bosch battery

[xena]

Hi all
Having a 2014 and a 2018 Cube means I have both the older style 4A charger and the newer 2A charger.

For general charging use, would using the 2A charger be kinder to the batteries or won't it matter?

TIA

 

[Deleted member 4366]

If you have the time, 2A would most likely be kinder.