Agreed . . . I have a 1.5amp charger that I just used to prep my wife's VTX1300 for an hour or so after adding the acid to the new cell.
One of my chargers has a neat little light that lets you know when it's ready. BTW . . . that was also the recommended amperage and charge per the battery manufacturer.
Now I'll keep it on the trickle charger during the winter.