How long i can use a fully charged 12v car battery with a 500w inverter?
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Answer:
If you are using the inverter at full power then there is a mismatch between its requirements and the capability of most car batteries. Running at close to 500w, the inverter will draw 40 amps from a 12v battery. A car battery rating of 40 amphour (Ah) is fairly typical. This means that it could supply 4 amps (i.e.. run the inverter at around 50 watt for 10 hours). Running at 40 amps, the battery will last for significantly less than 1 hour
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