K : battery capacity [Ah]

K : battery capacity [Ah]
The gassing voltage shall not be exceeded. If several battery sets would be used, the sum of charging
power has to be calculated.
The room free air volume V [m3] and the air quantity Q [m3/h] shall be calculated depending on battery size
as follows:
V 2,5 Q
I Qf n 4
 
 
n : number of battery- cells in series connection
f : 0.03 for lead batteries with solid electrolyte
0.11 for batteries with fluid electrolyte
If several battery sets would be installed in one room, the sum of air quantity shall be calculated.
Where the room volume or the ventilation is not sufficient, enclosed battery cabinets or containers with
natural ventilation into suitable rooms or areas shall be used.
The air ducts for natural ventilation shall have a cross-section A [cm3] as follows, assuming an air speed
of 0.5 m/s: