Re: Invertor Long lasting
By: Spacesst to Knight on Thu May 05 2016 09:13 am
I don't know much about your specific needs, but I use an awesome "JuiceBox" from Hardened Power Systems. It comes in a recycled ammo box, and has 40AH of juice based on LiPo batteries. The secret sauce is the panel that has lots of connections, protections, solar input, AC/DC invertor, and an AC charger.
You said 1000 ah/hrs, but that seems like a crap ton of power. Did you mean mAh? Or perhaps 1AH?
it's for running a 1000 Watts invertor for as long the BATTERies can
take it , 3-48 hrs continiously if possible
i Was Thinking About 1000 Amps/Hrs Batteries
or using a DC 2 DC converter, But on this , I have no Ideal howto ...
With the Same 3-48 hrs ....
Have you tested your general use scenario to see how much draw you're actually pulling on that invertor? It's rated at 1000 watts, but unless you're actually using a device on it that'll pull that much you would never use that much.
That said:
Consumption during timeperiod
1000 Watts * 48 hours = 48,000 Wh
Account for efficiency of the inverter (just making an assumption)
48000 Wh / 0.85 = 56,471 Wh
Determine battery storage
56,471 Wh / 12 V = 4706 Ah
Creating a battery array with that much power will be expensive. To give you a sense, my JuiceBox with 40 Ah cost about $1000, though you can tack on about $300 of that due to their proprietary charging and connector plate and inverter. Storing 100 times that means your 4706 Ah of storage will cost anywhere between $30,000 and $40,000, unless you're able to find something commercial that takes advantage of economies of scale. That is for LiPo batteries. If you use a deep cycle or less expensive battery system, then you can bring the cost down incredibly (such as down to under $10k), but there are other issues with that (battery memory, inability to recharge if totally drained, maintenance, low cycle count, etc).
A Crown FLA (flooded lead acid) 12VDC 1290Ah battery bank runs about $1900.
A Crown AGM (absorbent glass mat) 12VDC 780Ah battery bank runs about $1920.
An Outback Power 2700RE-24 AGM 24VDC 2288Ah battery bank runs about $13,200.
AC to DC is very inefficient (and heat generating) so it's better to do DC to DC so there are little to no losses of your precious battery.
Moral of the story -- battery storage is expensive.
Sadly, you're probably better off buying a $300 generator and some fuel.
Knight
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