Battery Battery.. invertor for a fan.... need help..?

[Tharun Kumar S]

Hi, I want to power a table fan (50 watts) using a battery. In India the input power to appliances (fan in this case) is 220 volts / 50 Hz. so can i power the fan with TWO 6 volts 4.5 AH sealed lead acid battery??
Can u please tell me how to do the power calculations? i want my fan to run for abt 4 hours. how many batteries do i need?

(im planing to charge the battery using solar panel but thats another question)

 

[Knobhead]

It would be cheaper to buy a 12V fan.

The losses in the inverter added to the cost make this uneconomical.

 

[Tharun Kumar S]

thanks tony. But u meant 12V battery right?

 

[Knobhead]

You said 6V batteries

Based on 6V Two batteries would keep the fan running for about 3+ hours. But will take the batteries in to deep discharge, this will ruin the batteries in a short time. Four batteries would prevent this.