I see two videos in the original message. Nice videos, BTW: www.youtube.com/watch?v=olCEGsKWQ3c www.youtube.com/watch?v=n4jRr7YAzfI I wanted to take a time lapse video of a Dog vomit slime mold several times, but I miss proper portable power supply, that could let me to shoot for few days in a row, without interruption.