Can I change AC LED Christmas Lights Strings to DC?

I would just cut the plugs off and connect the strand to say... a weaker battery (I wouldn't suggest a car battery for this) and see how it is, but I'm a tinkerer so I don't honestly know if this will work. You could also try getting a DC to AC converter, plugging it into a battery and using that. We do that at my vocational for the LED's in the hallway powered by a wind turbine and solar cells.

Something like this - http://www.amazon.com/Cobra-400-Watt-12-...

It’s simple identify the voltage of each light as well as if they run series parallel or a series parallel hybrid, this will tell you how much voltage is needed to run the leds there may be enough in series that they require 120v to activate which case cut into smaller segments and run off relevant source, you can find out each lights operating parameters by either using a multimeter or ur preferred analyzing tool I’d actually start low and work up in voltage if u want do the oOoO method by hooking it up to random batteries to see if it works always start low so you don’t fry ur lights.