No it won't burn through the end cap, these are very low voltage LED's.
OK I just found a cart that would not work on a shortie. If you guys could try this and let me know if it works for you. The carto and the battery were not making contact so I took the carto and popped up the center post just a tad and it works great. I know this is not a perfect solution and we will get it figured out for you, but in the meantime this may work for you. Just carefully pop up the center post on the carto (with a paper clip perhaps), and try it out. The staple mod may work for this as well.
I've actually tried the staple mod and couldn't get contact either. I don't wanna risk messing up a carto trying to pop up the center post on it since the center post on the battery is the issue; even if I got a carto working on it, I can't charge the battery.
Edit: Honestly, this isn't a huge deal for me, I have plenty of other batteries to use for now, including one of the new autos you guys threw in my order with the shorty (which, btw, is an awesome battery. I generally stick with my manuals for the most part, but the longer cutoff on the new autos is great, and they put out a ton of vapor).
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