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Is there a way to figure how long a 24V battery inverted to 240V will power a 1000 watt appliance? 

by on March 14, 2010

Q: Is there an equation to determine what size, volts, that a battery needs to be to power a 240V appliance via an inverter and how long it will last? For example a 24V battery inverted to 240V will power a 1000W appliance for 1 hr but a 1500W appliance for 15min.

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Is there anyway to know if a Dell computer works with 120V – 240V? 

by on August 7, 2009

Q: I was wondering if there is any way of knowing if Dell computers, in general, work with 120V – 240V, allowing them to be used in both Europe and North America. Is there certain models that do and some that don’t? Is there anywhere I can get a list of those that do and those that don’t?