Under normal usage, this gas production is very low.
However, in abusive conditions, (i.e. charging or electrically shorting) high levels of hydrogen can be
produced with larger battery sizes having a greater capacity to generate hydrogen gas. In devices that
use a tightly sealed battery case (i.e. diving lights), the hydrogen gas can mix with air to create an
explosive atmosphere. For devices with tightly sealed or water proof battery compartments, hydrogen gas
generation under normal or abusive conditions needs to be addressed as a potential safety issue to
prevent the accumulation of dangerous levels of hydrogen gas within the device.