I bought some of these in January. I alsl got 1.5M (5-30cm strips), with a 24ch IR remote controller for 20$.
I made a 12VDC battery pack with one 9V and two D-cells, put in a switch, and attached them to my son's snare durm for us to use performing with the Bagpipe band we are in durring St. Patricks day. SO cool!
In testing, The LEDs lasted for 10 hours (constand - ON) before I got tired of timing it. Next step it to make a sound activated, Flash with each drum strike.
Dont have tonight to look at all of these 4 pages of posting, but can not wait to play with these.
Mike