Safe Battery UsageBattery Recycling and DisposalStatistics About BatteriesAbout Car BatteriesAbout BAJ

The proper and safe handling of lithium-ion secondary batteries

Do not leave lithium-ion secondary batteries on the dashboard of a vehicle, on a window sill, or any location where they are exposed to direct sunlight, or high temperatures, such as in a vehicle parked in the sun. Doing so may cause the battery to leak.


2) Do not leave batteries near a heat source

Do not leave lithium-ion secondary batteries near a heat source, such as a heater. Doing so may result in overheating, explosion or fire.



3) Reading the instruction manual

Be sure to read the instruction manual of the device and any warnings before using a lithium-ion secondary battery.



4) Do not get batteries wet

Do not spill water, salt water, juice or other fluids on a lithium-ion secondary battery. Doing so may break the protection circuit built into the battery, resulting in the battery being charged with an abnormal current or voltage, and cause overheating, explosion or fire.


Use the battery charger and AC adapter specified for use with the lithium-ion secondary battery. Other battery chargers or AC adapters may have different charging specifications that can result in overheating, explosion or fire.



A lithium-ion secondary battery comes with a specified orientation of positive and negative terminals. Do not force the battery into a battery charger or device if it does not fit. Connecting the battery with the positive and negative terminals reversed will instead cause it to charge incorrectly, and may result in abnormal chemical reactions internally that lead to leakage, overheating, explosion or fire.


7) Do not directly connect a lithium-ion secondary battery to an electric power outlet or cigarette lighter socket.

Do not directly connect a lithium-ion secondary battery to an electric power outlet or cigarette lighter socket of an automobile without the use of a battery charger. Doing so may result in electric shock or the application of high voltage that produces an excessively large electric current, causing the lithium-ion battery to generate heat, explode or catch fire.


8) Do not recharge batteries where the temperature may become high

Do not recharge lithium ion secondary batteries on the dashboard of a vehicle, on a window sill, or any location where they are exposed to direct sunlight, or exposed to high temperatures, such as in a vehicle parked in the sun. High temperatures may activate the built-in protection mechanism designed to avoid accidents, preventing the battery from being charged, or the protection circuit may break, resulting in the application of abnormal current or voltage when charging, and leading to overheating, explosion or fire.



9) Do not throw a battery into a fire

Do not throw lithium-ion secondary batteries into a fire or heat them on a hot plate or by other means. Doing so will only melt the insulator, damaging the gas exhaust valve and the protection mechanism, but also lead to overheating, explosion or fire.


10) Do not short-circuit the battery

Do not connect the positive and negative terminals of the lithium-ion secondary battery with a metal object. Do not carry or store a lithium-ion secondary battery with metal objects such as necklaces, hair pins, coins or keys. Metal objects may short-circuit the positive and negative terminals of a lithium-ion secondary battery, resulting in a large electrical current, which may result in overheating, explosion or fire, or overheating of the metal object.



11) Do not apply strong impacts to the battery

Do not throw lithium-ion secondary batteries, drop them from high places, or otherwise subject them to strong impacts. Doing so may deform the battery and break the protection circuit built into the battery. This may result in the battery being charged with an abnormal electric current or voltage, and cause overheating, explosion or fire.


Do not drive a nail into a lithium-ion secondary battery, hit it with a hammer, or crush it under foot. This may deform the battery and break the built-in protection mechanism, resulting in overheating, explosion or fire.



13) Do not directly solder batteries

Do not apply solder directly to the terminals of a lithium-ion secondary battery. The heat will melt the insulator, damaging the gas exhaust valve and the protection mechanism, which could lead to overheating, explosion or fire.


Do not put a lithium-ion secondary battery in a microwave oven, pressure container, or other such devices. Sudden heating may break the seal, resulting in overheating, explosion or fire.


15) Do not recharge batteries where heat can build up

Do not place combustible materials on top of or over a lithium-ion secondary battery when recharging or discharging. Doing so may result in overheating, explosion or fire.


16) Do not disassemble or modify batteries

Do not disassemble or modify a lithium-ion secondary battery. Lithium-ion secondary batteries have a gas exhaust vent and a built-in protection mechanism to prevent accidents. Damaging them may cause the battery to overheat, explode or fire.


When a device is not being used for an extended period of time, remove lithium-ion secondary batteries and store them in a dry place.


18) Keep batteries out of the reach of children

Keep lithium-ion secondary batteries out of the reach of children. Careless handling often involves risk.


19) Keep batteries out of reach of children and animals

Keep devices that contain batteries and batteries out of the reach of children and animals to prevent the batteries from being licked, swallowed, chewed, etc.



Lithium-ion secondary batteries have finite life spans. If the device requires frequent charging, replace the battery with new one.


If the lithium-ion secondary battery gives off an odor, overheats, is discolored, deforms, or reacts in anyway unusual during use, recharging or storage, remove it from the device or battery charger and do not use it again. Continuing to use such batteries may result in overheating, explosion or fire.


22) If a battery leaks, keep it away from fire

If a battery leaks or gives off an unusual odor, immediately remove it and place it away from any naked flame. The leaking electrolyte is inflammable and can cause the battery to explode or catch fire.



23) Beware of fake and modified batteries

Batteries that have no manufacturer or distributor names or warning labels displayed may be fake or modified ones. Fake and modified batteries may have damaged or missing safety mechanisms that are designed to prevent accidents. This is dangerous because it may result in explosion or fire. Be careful when purchasing such batteries.


Do not place batteries on top of or near the electromagnetic range. The batteries may become hot, causing them to overheating, explosion or fire.


25) Do not force decayed batteries into a device

Do not force decayed batteries into a device. Doing so may deform the lithium-ion secondary batteries and break the internal parts or built-in protection mechanisms. Continuing to use such batteries may result in overheating, explosion or fire.


The proper handling of lithium-ion batteries – Related topics