12v20Ah battery can be charged with 15v4Ah charger?

12v20Ah battery can be charged with 12v charger (it should be 12v charger, 12V battery is fully charged, and the voltage is a little more than 14V). However, the output charging current of the charger is 4A, which is still a little high. It is best to use 12V2-3A charger.