I just bought a Jam bluetooth portable speaker, and it doesnt come with an AC adapter so that i could charge the device in a wall outlet.i do have an adapter for my iPad 4 which im really not sure if it would be compatible.im afraid that it might burn or ruin the speaker.
См. статью: Is it okay to charge a 5vdc 500ma device with a 5.2v - 2.4a (12 wats) charger?