So I decided to go back and research(not thoroughly) this thread about batteries and if anyone else besides, centizen, opened up their inhalater. Anyways I decided to and I followed Centizen's instruction to open the unit, which was not that difficult(more difficult to re-assemble IMO), I wanted to see what type of batteries are being used. It is a Samsung Brand. The color of the battery is like a pastel purple/blue and after googling the info typed on the battery it seems as though its an unprotected 2800mAh flat top 3.7v 18650 li-ion. I have been looking online for maybe a 2900-3100mAh unprotected flat top 18650 but cant seem to find any....Did any one try to replace or upgrade their battery? if so please post suggestions...Thanx
~Menny