The type of this special lithium rechargeable battery is 18350, the normal voltage of the battery is 3.7 volts and the maximal rechargeable voltage is 4.2 volts, the capacity is 950mAh.

This battery is used for E-Pipe.

When the red light becomes darker, you need to recharge the battery with the charger.

Precautions for the Special Lithium Battery:
  While use or before charging, position the battery in proper polarity direction.
  Do not place the battery near high temperature area when charging.
  The battery must be charged for about 10 hours for the first time and be recharged for about 3 hours when necessary.
  As the capacity of the battery is limited (360 mAh), the battery could be used for only 2-3 hours if you use the E-Cigar or E-Cigarillo intensively. It is recommnaded that you get spare batteries ready as many as you need.
  Please do not charge the battery for more that 5-6 hours.

  It is also can be used for Ruyan E-Pipe products.