Why do some batteries have to be housed in a garage?
Some batteries are designed to be installed indoors. The casing around the batteries often have ventilation ports to keep the batteries well-ventilated and within their optimum operating temperature range.
The manufacturers have to weigh up the need for ventilation against the impacts of the batteries operating at higher temperatures. The ventilation ports can allow dust and water to get in – and this can have a detrimental effect on the battery. Batteries that are designed to be installed indoors should be indoors, unless housed in another enclosure that protects them from the elements.