Can halogen heaters designed for use with 220-240VAC be used as a load to test DC batteries?
Does it need a minimum voltage to function, or is it "dimmable" like incandescent lights?
Here is a page with a bunch of similar products: http://www.amazon.co.uk/b?ie=UTF8&node=3147691
I hope it is possible to use one of them for testing 125V DC and 150V DC batteries; and to use two of them in series to test 300V DC batteries.
The halogen heaters I have have three elements with 400W each, so it might allow a degree of "fine-tuning" the current draw.
This is of course quite dangerous - fire and electrocution are very real risks here! Do not try any of this unless you have the right equipment and the know-how!