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Back in June

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by technogeek-1995

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Back in June, I asked plans for a firework launcher, and I was told to buy a car battery (@12 volts). But, before I buy a car battery, I wanna know if I could use a Black & Decker VPX (@ 7.2volt) lithium-ion battery.

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by thechas

If you are using a battery powered system, the choice of battery depends on what the ignitors require.

Since the process of igniting a fuse is a function of heat, the net power is the factor to take into account.

Presume that each ignitor draws 1 amp at 12 volts. That is 12 watts of power / heat.

At 7.2 volts, that same ignitor is only going to produce 4.3 watts of power / heat.

At best with a lower battery voltage, it will take longer to start the actual fuse.

At worst, the fuse will smolder and the fireworks will light at unpredictable times.

With all things electrical and electronic, you need to take into account the safety issues of component substitution. Fireworks being EXPLOSIVES require no compromise in ANY SAFETY system.

Chas

by technogeek-1995

Because Fireworks are EXPLOSIVES I desire a safety system that will remotely launch my fireworks. That means I want to find a power source so I can launch my fireworks 30-50ft away from me.

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