Firefighter Training


Issue 6 and Volume 153.

The battery-powered cordless reciprocating saw is a new version of the old electric saw that overcomes the older tool’s disadvantages. The electric version’s main disadvantage is its need for a nearby electric power source that might not always be available. Additionally, the electric saw’s application is limited to the length of the electric cord and its extension. (1) A battery-powered cordless reciprocating saw cuts an automobile windshield. The blade is continuously lubricated using a foam fire extinguisher. (Photos by James Harris.) Click here to enlarge image Now produced by various manufacturers, the cordless reciprocating saw commonly uses an 18-volt rechargeable nickel-cadmium (nicad) battery. Most manufacturers state that, under normal conditions, the battery should last between 15 and 20 minutes between charges. However, in extensive testing under heavy load, I found that the battery actually lasts between nine and 12 minutes and that a second battery was needed to continue operations.…

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