2 pieces Efest Purple IMR18350 - 700mAh 3.7V Li-Ion battery (positive pole flat, unprotected) by steamer box (Personal Care)
I use the batteries to evaporate. 2 pieces are empty to me within a few hours. More can not be expected of 2 x 700mAh well. I would recommend (also on the go) rather 18650 batteries, if the device itself supports such batteries. They have up to 5 tim
