Shortening battery powdered light string
I'd like to cut the last six lights off an LED battery powdered string of lights (which contains 20 lights).
From beginning to end, there are only two wires going in and coming out of each individual light.
1. Do I have to keep the original LAST bulb on the string as my last (no. 14) bulb after shortening the string?
2. Or can I simply cut the last six off? If that's so, do I tape off the two wires that come out of the last bulb so that they DO NOT touch, or do I wire them together?