No warranty for me, unfortunately, I'm from Indonesia and we have Chinese stuff a lot cheaper here, but all comes without warranty. You tested it in front of the seller, it fires, you go home and forget about getting replacements if you some how got unlucky.
Well, I took it apart already
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..and tried to unwrap the foil off the battery, thinking that there is a 'regular' 18650 inside that I can reuse, which is a bummer because it is indeed a 'wrapped' battery!
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..tried to fiddle with it, and managed to sort of turn it on again! ..with shorting those pins circled in red..it fires, it reports resistance, but after 5 seconds or so, it goes dead again, and every time I short those pins it'll just go on again at 5.2W, and will not save previous settings..
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..so, that's it, the end of my iStick..