> >Something else to consider. I you race, you will eventually need a power
> >supply for other things (dyno, truers, etc). Buying a DC charger and a good
> >30-amp power supply might actually save you money and hassle later. (I wish
> >somebody had told me this when I started.)
Until recently, most of the AC or AC/DC chargers were inferior in
quality compared to the DC only chargers. Most of the AC-AC/DC chargers
were of the timer variety, not a good way to keep batteries in good
condition. Some of the common AC-AC/DC manufacturers like Pro-Tech made
peak detection chargers, but these were not much better at keeping
batteries alive than the timer chargers.
Now, there are several AC-AC/DC chargers that work well. At the top of
the list would be the Tekin BC112C. Class also makes a nice AC charger.
ALL chargers actually run from DC, if you purchase a charger that will
work on AC current, you are also purchasing a power supply with it. It
is only powerful enough to run the charger though.
My opinion is to buy a 15-30 amp power supply and a high quality DC
charger. This will give you the flexibility of AC or DC operability.
The cost of a 15 amp power supply and a decent charger will be very
close in price to an AC-AC/DC charger.