i1000

Hi I am thinking of buying the i1000 dash cam (http://www.lightinthebox.com/i1000-hd-1080p-dual-lens-camcorder-car-dvr-dash-cam-black-box-with-rear-view-camera_p1679791.html) and realize that these things only come with a small battery and will only last a few minutes from when the ignition is...