Warning - This is a strictly technical product, not meant to be directly used by end consumer. Li-ion battery cells, if not handeled properly, can result in fire hazards. When you buy these cells, make sure you know how to use them is safe manner. To be used strictly by trained engineers/ technicians only. 

Batteries without protection - precautions must be taken when using:

• do not recharge more than 4.2V
• do not discharge less than 2.5V
• do not confuse polarity
• do not heat or keep near sources of ignition
• do not short circuit contacts at all
• strictly avoid contact with water
• store at a temperature not exceeding 45 degrees Celsius
• after long-term storage, it may take several charge / discharge cycles to build up the capacity
• use only Li-ion battery charger for charging

The store is not responsible for any damage caused by improper handling of batteries!