Electronics, Lighting, & Gadgets - Overvolting an electric motor...
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So I'm making one of those overvolted MR16 light setups and I'm gonna be using a 14.4v battery. Right now, I've got a car horn (electric motor/air compressor hooked up to two little air horn trumpet things) that runs off of a small 12v SLA battery. Will I be able to use the 14.4v battery for this motor?
probably no problem. If the motor is designed to handle the load easily, then increasing the voltage a little is no problem. if the motor was already on the edge of what it could handle (unlikely) then you'll break it.
11-13-09, 02:24 AM
For service as intermittent as an air horn there should be no problem IMO. Automotive 12V motors routinely run at 13.2+ volts which is the actual output of a 12v lead acid battery when fully charged and the car alternator output is above that in order to charge the battery, usually in the 13.6v to 13.8v range as I recall.
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