Fully charge battery (to 4.2V) before first use.
Never short circuit battery (connect positive, and negative side).
Always keep batteries in a battery case, or any other insulating material.
Never keep the battery together with any metal objects.
Never carry bare cell in your pocket with keys, change, or any other metal objects.
Never completely discharge Li-ion battery (below 2.7V)
Charge only with battery chargers designed, and made for Li-ion batteries only.
Do not charge battery over 4.29V (another reason to use high quality battery charger).
Do not leave batteries unattended while charging.
Do not use old and new cells together.
Do not store your Li-ion batteries fully charged (for extended period of time).
Store in cold and dry place at approximately 3.7V (storage charge).
After battery is discharged - don't leave it discharged - charge it as soon as possible.
Never attach any metal moving parts to the top-positive, or the bottom-negative battery.
Never use force to install (insert) li-ion battery.