The Efest 18650 is a high quality battery & excellent value for money.
Used for a variety of different devices from ecigs to cameras.
High capacity & stable discharge voltage
High battery safety
Free from leakage of liquid electrolyte
Low battery internal impedance
Because it is unprotected it is therefore up to the user to make sure this battery is not over discharged
You can find our full list of 18650 rechargeable batteries here