I returned an air rifle at Cabellas and used the money to buy a Goalzero Lighthouse Core lamp. I drove back home (an hour one way with traffic) charged it up and turned it on. It wouldn't turn off. No matter what I tried. So I drove back (another hour each way) and Cabellas nicely let me have another brand new unit. I repeated the process, charged it up and turned it on. It ALSO wouldn't turn off. No matter what I tried. I called Goalzero and politely raised Cain. They sent me a THIRD Lighthouse Core Lamp, which amazingly turns off and on. As I asked Goalzero in their on-site reviews sections: "who do you have managing your quality control sections in China: Larry, Moe and Curly? (The three stooges)".