Stupid freaking battery

Ok so I got my b16 swap all done, all I have to do is add MTF and bleed my brakes. So since I totally drained the motor of oil I wanted to make sure it was primed before starting, so I unhooked the harness from the dizzy and cranked it over 3 times for like 5 seconds each. Then I went and hooked the dizzy back up, get back in the car, turn the key, and GRRRGrrrrgrrrrr......FUCKING battery died. Now I have to wait till morning to get a new battery for it.