Portable Generator For Sale

What would be a deep cycle battery equivalent (in amp hours) in comparison to a 5000 watt gas generator?

This is probably a very basic conversion & I apologize for my ignorance but I am a plumber by trade.

Public Comments

1. 5000 watt generator means 5000 watts of power - im sure you know. Watts are volts x amps. If, for instance, the generator were 120 volts, it would need to be able to supply 41.67 amps. 120 x 41.67 = 5000 The problem with batteries, even deep cycle, is that they have a very hard time supplying this kind of power for very long - so as in electric cars, there are many.
2. There is no comparison. Well, there is, but you won't like it. Your 5000 watt gas generator is putting out 120 volts ac, capable of about 40 amps ( 40 x 120 = 4800 watts). Your deep cycle battery puts out 12 volt dc, and in my experience you don't want to continuously pull much more than 20 amps from it. The higher the load, the less efficient the battery. So it is capable, let's say, of 240 watts (12 x 20 = 240 watts). So you would need 20 deep charge batteries to get the same power output! Your 240 AH deep cycle would be discharged in 12 hours. Then, the question is, will you be using DC or AC for your final appliances, etc? If you have 12v DC batteries, you will need an inverter to convert DC to AC. I struggle with this all the time in our boat. I do not use a gas generator, so the solution is conservation. Good luck Bill
3. The 'genny' will put out 5 KW as long as you fuel it. The battery output is dependent on the rate of discharge, and how much power you need to draw. In effect, it's a 'fuel tank' of electrons, but it'll give a lot less total power at high drain rates than at lower ones. (D.C. welding directly from a battery without some kind of current limiting resistor, would damage it pretty soon if that's what you're looking at. They're not designed to be 'shorted'.)