I found a source of really cheap power supplies to run my DC powered
electric chargers. http://www.ramboy.com sells a 12 volt @ 13 amp power
supply for $19.95 including shipment.

After I got it, I cranked up the voltage to 13.2 volts and it still supplied
almost 13 amps. Small package switching regulator type.

If your looking for a means to power a 12 volt DC charger this is a cheap
way to go. By the way I am in no way connected with them, simply a satisfied
user that is ordering 2 more.

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