©2019 SCUBA FORCE | Doc. No. 01-2021 Rev. 1 26.07.2021
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BRIGHT CANISTER AND LIGHT SET INSTRUCTION MANUAL
5.2 General Notes on the Handling of Lithium-Ion Batteries
5.2.1 Hazards When Dealing with Lithium-Ion Batteries:
The following risks are known:
Mechanical Loads
Mechanical damages can lead to internal short-circuits. The high flowing currents cause the
accumulator to heat up. Plastic housings may melt and catch fire. Under certain
circumstances, a mechanical defect may not be immediately recognizable. An internal short-
circuit may still occur even a long time after the mechanical defect.
Chemical Reactions
Lithium is a highly reactive metal. Although it is only present as a chemical compound in
lithium batteries, the components of a Li-ion battery are often highly flammable.
Compensatory reactions during overcharging, such as the decomposition of water into
oxyhydrogen gas like in other batteries, are not possible. Li-ion batteries are hermetically
sealed. Nevertheless, they should not be immersed in water, especially when fully charged.
Burning batteries should therefore not be extinguished with water, but with sand, for
instance. In most cases, the only option in the event of a fire is to extinguish any
subsequent fires that occur and allow the accumulator to burn down in a controlled
manner. The electrolyte solution usually is flammable. Leaking electrolyte solution from a
Li-ion battery can be washed off with water at a distance from the battery.
Thermal Loads, Risk of Fire
Thermal load can cause the separator of several lithium-
ion batteries (→lithium
-polymer
accumulator) to melt, resulting in an internal short-circuit with sudden release of energy
(heating, ignition). New battery developments (LiFePO4) or ceramic, more temperature-
resistant separators provide higher safety, but have not yet gained widespread
acceptance. Internal protective circuits or battery management systems (BMS) with
temperature sensors, voltage monitoring and safety shutdowns shall prevent heating or
ignition in case of overcharging or overloading.
IMPORTANT:
Lithium-ion batteries, like other rechargeable batteries, must not be short-
circuited. Short-circuiting (even with metal jewelry or tools) can cause fire or burning
due to the high equalizing currents.
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