I want to charge a couple of small (1Ah 12V) sealed-type lead-acid batteries. I have a Bosh KL 1204 car battery charger. The charger's nominal current is fixed at 2.3A, while on my batteries it is said "Initial charge current <= 0.39A.
Is it possible that I use the said charger for the said batteries? If so, what are the steps to modify the charger to suit the batteries?