Aspire cf sub ohm

I just received the Aspire cf sub ohm and Atlantis 2 from a friend who didn’t use it. I don’t have any vape juice right now, but the battery won’t turn on and doesn’t turn any colors when charging. Not sure if he gave me a dead battery, but when I charge it goes red to green and the battery doesn’t show any colors either. I’m also new to vaping
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