Need assistance for battery bitmap!

I have been playing around with Zooper for awhile now, but I can't seem to get a grip with the whole bitmap. I have been trying to create a battery bar using minimalistic battery icons that I found on Deviantart. I came across a thread that instructed to make sure a ZIP of your icon pack is within the sdcard/iconsets or something along those lines.. I have tried this but did not show up when I choose an iconset :/...

Hopefully this isn't confusing for anyone haha.. Would greatly appreciate it though if anyone can help me with this ;_;