UL 144 applies to primary batteries based on various electrochemical systems. It does not, however, treat all batteries equally. The standard categorizes batteries based on chemistry and mass, recognizing that a small coin cell presents different risks than a large lithium thionyl chloride cell used in utility metering.
The standard requires that the battery terminals be adequately insulated from the cell casing to prevent external short circuits. This is particularly vital in applications where batteries are packed tightly together, where a torn wrapper could lead to a conductive path. ul 144 gratis
One of the most critical requirements for primary cells is the vent mechanism. In the event of excessive gas buildup (due to abuse or internal shorting), a battery must release pressure in a controlled manner rather than exploding. UL 144 mandates specific design criteria for these vents: UL 144 applies to primary batteries based on
The scope of UL 144 includes: