Unprotected 18350 battery for e pipe is made by Li-ion which have 900mAh capacity and gives 800 to 900 puffs when fully charged (also depend on depth of each puff).
You can easily find the mark + and – on top and bottom of each battery (+) means positive pole while (-) means negative pole.
Attention: To safe epipe body from burning put battery to the right direction with help of (+) & (-) signs
Shipping weight: 28g
Size: Diamter 18mm/0.7inch, Height 35mm/1.37inch
Please put battery on right direction before switch on the charging.
When charging starts LED light flashes Red color means charging begins, and it will turn into Green when battery become fully charged. Please also make sure that the polarity of charger and the battery be the same during charging.