An interior door does not have to withstand extreme weather changes. Interior and exterior doors are not the same product sold under different labels. The construction of each is different, with exterior doors given special treatment to stand up to the elements and frequent use.
The charging of lead-acid batteries can be hazardous. However, many workers may not see it that way since it is such a common activity in many workplaces. The two primary risks are from hydrogen gas formed when the battery is being charged and the sulfuric acid in the battery fluid.
2 Do not use the battery when it is fully discharged. Another suspected cause of batteries being damaged or even catching fire (thermal runaway) is when it continues to discharge way past its discharge threshold. Meaning; using it way past empty. A Li-ion battery typically holds a capacity of 4.2 volts at 100% charge.