If I wired a currnet inverter directly to a car battery(not in the car or even touching a car in anyway) would the inverter work? and how long would it last
it's powering multiple VCRs
Yes. It would depend on wattage drawn by the device you have hooked up to the inverter (Volts x amps - e.g. 115volts times 1.5 amps = 173 watts). Then you have to look at the amp-hour (ah)rating of the battery. If you have a 50Ah battery, it would supply a 5A load for 10 hours (longer if the amp draw is lower). I don't know what you are doing, but you may want to use a marine batter instead of a car battery.
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