Ventilation When Charging Batteries (lead acid batteries only)
WARNING
Maintenance and storage areas for Low Speed
Vehicles (LSVs) must be properly ventilated, in accordance with applicable
fire codes and ordinances, to prevent the accumulation of volatile
hydrogen gas. Hydrogen gas is emitted during the LSV battery charging
process. If not properly ventilated, hydrogen gas has a tendency to
accumulate in pockets near the ceiling which can lead to fires and
explosions. The amount of hydrogen gas emitted during charging depends
on a number of factors including the condition of the batteries, the
output rate of the battery charger, and the amount of time the batteries
are charged.
Always ensure a minimum of 1 to 5 air changes per hour in the charging area (depending on factors such as the number of vehicles charging).
NOTICE
The minimum number of air changes required
per hour during LSV charging depends on a number of factors including
the number of vehicles charging, the size of the storage space, and
the amount of hydrogen gas emitted.
At least 1 air change per hour is recommended for 1 vehicle, but up to 5 air changes per hour can be required for multiple vehicles.
NOTICE
The process, SAE J1718, can be used to determine the amount of hydrogen
gas an electric vehicle will generate while being charged in a residential
garage.
Consult applicable fire and safety codes for more specific ventilation requirements and to ensure the proper use of explosion proof electrical equipment.