Safety Instructions for Li-ion Battery Cells

To prevent personal injury or property damage, the following must be strictly observed.
The degree of possible injury and damage owing to intended abuse, incorrect use or mishandling is described by the three levels of instructions (Danger! / Warning! / Caution! ) below.
Danger! indicates a situation, which could resulted in death if not observed and handled properly.
Warning! indicates a situation, which could resulted in serious injury if not observed and handled properly.
Caution! indicates a situation, which could resulted in injury if not observed and handled properly.

Never use a DC power supply to charge the Li-ion battery cell! A DC power supply may overly charge the Li-ion battery cell, which may cause serious safety issues.
Ensure the correct polarity when connecting a Li-ion battery cell to a CC/CV (Constant Current / Constant Voltage) charger.
Never intend to charge a Li-ion battery cell under inverse polarity!
Never leave a Li-ion battery cell unattended while connecting to a charger!
Never drop a Li-ion battery cell into water!
Never incinerate a Li-ion battery cell! Toxic material may burst or release to harm eyes and skins.
Never leave a Li-ion battery cell under the blazing sun or inside a car with closing windows! The long time overheated Li-ion battery cell may cause smoke or flame.
Never disassemble or shred a Li-ion battery cell! It may cause unexpected venting or explosion!
Never charge or discharge a Li-ion battery cell excessively!
Never short-circuit a Li-ion battery cell if you are not sure! Handle with care when a Li-ion battery cell is connected with flying wires or partially insulated alligator clips.
Never shock a Li-ion battery cell with a heavy mechanical force.

Never connect a new Li-ion battery cell in series with another old battery cell, especially when the battery chemistry is different.
Never touch or handle a Li-ion battery cell if it is unusually hot, whether through continuous large current discharge or external heat.
Never remove or cut through the shrinking wrap insulation of a Li-ion battery cell.
Never over-discharge a Li-ion battery cell if its power output to drive a dedicated load is obviously failing.
Stop using a Li-ion battery cell if venting, excessive temperature or noise is detected.
Keep a Li-ion battery cell away from babies or children. Seeking a doctor treatment immediately if swallowed.
Do not allow the bursting liquid to contact eyes or skins in an event of venting! Wash the affected areas with large amount of water and then seek medical advice immediately.

Use a dedicated charger to charge your Li-ion battery cell. If no dedicated charger is available, a CC/CV (Constant Current / Constant Voltage) charger with proper voltage range shall be properly selected.
When using a Li-ion battery cell from a long term storage, charge the cell fully at 0.2C rate before using it. The cell can be fully activated after 2 ~ 3 deep cycles of charge and discharge.
Li-ion battery cell is not required to be fully discharged. You may charge your Li-ion battery cell at any time. After you fully activate your cell, avoid the deep cycles to lengthen the life of your Li-ion battery cell. However, two deep cycles of activation are suggested to apply every 3 months.
If the battery cell is getting hot after discharge, allow it to cool before charging it.
Keep your Li-ion battery cell at ambient temperature around -10 ~ 25 degree C and maintain its SOC (State of Charge) about 40% ~ 50% for long term inventory.
When not using a Li-ion battery cell, disconnect it from the device.
Disposed Li-ion battery cell should be treated by officially authorized unit.
Battery cells with different chemistry should be separated when disposing them.