Just wondering what the most efficient method would be for supplying 6v to an EQ5 mount from 12v gel batteries might be? I can see "DC-DC 12V to 6V 3A 15W Car power adapter Converter Regulator Step down Supply" on ebay from China and Hong Kong, for example:
http://tinyurl.com/bn872qz
Cheap, but I wonder how efficient they would be, would they have heatsinks?
is there a better way?
Chris