Technical Manual BCIS-09: Battery Flame Retardant Venting System

Battery Technical Manual Section BCIS-09: Battery Flame Retardant Venting System

Revised 05/15

BCIS-09 is a recommended procedure for testing lead-acid SLI (starting, lighting, and ignition), Heavy-Duty, EV (electric vehicle) and RV (recreational vehicle) batteries to determine the effectiveness of the battery venting system to retard the propagation of an externally ignited flame of battery gas into the interior of the battery where an explosive mixture can be present.

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Rebecca Conway

There is still a lead acid battery in the majority of EVs.  [And] we’re also seeing an increase in the number of multi-battery systems – vehicles with more than one battery, a primary and auxiliary battery.

Rebecca Conway, Executive Director of Marketing and Technical Services, Clarios