Hi,
Rule of thumb you can get 1/2 the rated output in amp/hours out of your batteries w/o serious degradation of their health. So yer looking at about 6 amp hours of use before the batteries are effectively 100% discharged.
As far as the amount of light goes, if you can do what you want to do with the amount of light your string is putting out that's all that matters and they "work". You might want to try reading by them for a reasonable amount of time or doing whatever you plan to do with them on. Real world experience is the "best test". I'm not arguing the point that they don't put out enough light for you.
As far as the fan you referenced goes, I just dug into my "stash" and found a couple of 1.5 inch fans. They draw, according to the label, 0.1 to 0.25 amps at twelve volts. The three inch fan I found says it draws 1.3 amps.
I have no idea how much air they move but given a week or so I can borrow a test instrument and get a reasonable value.
I have installed Fantech vent fans in my bathrooms. They are centrifugal fans so they might draw more compared to an axial fan but the 150 cfm fan draws 55 watts or so. Nearly 150 times more than the Antec fan you referenced.
Fantastic vents are kinda the "standard" on the forum. To move 920 cfm they draw about 3 amps.
http://www.fantasticvent.com/products/m ... _6000.htmlIt just seems a bit "fantastic" that Antec (the fan referenced in your post) can move nearly 50% more air than the Fantastic fan and use 1/10th the power. Maybe they're using Kryptonite magnets?
Having used a Fantastic fan I wasn't overwhelmed with its output.
I'd be surprised if the Antec delivers 50% more air than the Fantastic fan for 1/10th the power.
Just don't want you to be disappointed with your system but it seems to me that yer planning on getting an awful lot out of 6 amp hours.
A 6' X 4' X 3' space is nearly 80 cubic feet. That seems a bit cozy for a Teardrop sleeping quarters.
Hope this helps.
Cheers,
Gus
The opinions in this post are my own. My comments are directed to those that might like an alternative approach to those already espoused.There is the right way,the wrong way,the USMC way, your way, my way, and the highway.
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