democratic
Oct 2, 2009, 12:33 PM
How many volt a 130 ah tublar battery to take 500watts with a inverter ?
Perito
Oct 2, 2009, 01:50 PM
I assume this is the question:
 
How many volts would a 130 amp-hour tubular battery have to be to supply 500 watts using an inverter?
 
If you multiply the amp-hours (130) times the voltage, you'll get the number of watt-hours.  If you want 500 watts for 1 hour (500 watt-hours) and you have a 12-volt battery then
 
130\,ah \,\times\, 12\,v\,=\,1560\,wh
 
If you want to draw 500 watts, the battery will last for
 
\frac {1560}{500} = 3.12\, hours
 
or something over 3 hours.  This does not include losses in the inverter.  There will be some power lost in the inverter.  I'm not sure how much; maybe as much as 25%.
 
The inverter must be rated to supply 500 watts (probably should be rated at at least 5 amps at 120 volts).