My maxe went back twice during the warranty period.
First time after it went up in a puff of smoke on install. Adaptto honoured warranty and actually told me there was a loose wire inside that caused a short.
Second time after almost a year of use it just went dead while charging (charging procedure the same as i had always done). This time even thoughstill in warranty i got charged $40, half of that was to reinstall the usb connector(which i had actually removed myself on purpose and sidnt want replacing) and the other half was for a part that was not disclosed
Fair enough, they did pay return postage both times from russia to UK , but both times it cost me around $80 to send it there. And both times it was definitely not my fault that the controller failed. And the two occasions were withinn the first 12 months.
Its an amazing piece of kit when it works, and i would buy it again once more R&D has been done to hopefully iron out the failures of the first incarnations let loose on the public.