Originally Posted by akitakoi
Any chance one of you "geeks" know if these halogen bulbs could handle 18 volts?
I have a Dewalt 18 volt battery pack from a cordless drill and the rapid smart charger that came with it. I would like to use this as a power source if possible.
tia
Being an experimentalist by training, profession and nature, I'd say go to your local big box store, buy a 12V MR11 or MR16 bulb for around $3, wire it to the battery and throw the switch (you might want to put it behind a shield of some sort

). If it goes "phiffzzttzzttt" and blinks out or "POP" and explodes, then I'd say no. But...if it shines like a new sun I'd say you're okay. Your bulb life is likely to be short but it might be a blaze of glory for a little while
I have 12V MR11 bulbs burning at 14.4V and they seem okay. 18V might be pushing it but you'll never know until you try.