Goal Zero Power Bank Repair

I was at a local trialhead and under the trail map kiosk I spotted a lime green anodized metal cube. I figured it was another vaping device so I picked it up with the intention of either extracting a nice rechargeable battery, or throwing it in the trash. But it wasn't a vape thing. On the side it said Goal Zero and there was a USB female port, but something about it seemed incomplete. Then I noticed there was what looked like a USB male plug also on the ground. This male plug was the missing part and looked like it had come detached from what was actually a USB power bank. Upon inspection it looks like a "clever" design - the USB plug swings out from the power bank and also doubles as a power switch. It worked (past tense) by clicking into the body of the power bank using two spring-loaded pins, much like the way watch spring bars work. The two pins were electrically isolated and passed the positive and negative leads from the plug into contacts on the main body. But it turned out to…