I've purchased a Caanoo and, within what was included in my package, there's no AC charger. I own an Amazon Kindle, which uses an AC/USB plug, (this), and I wondered if I plugged in the Caanoo usb cable into that, would it charge the Caanoo? Or make a horrific explosion? Or do nothing at all? I'm afraid to damage the battery, so I thought I would ask before I try. Would this be safe to use, or work at all? Thanks.