Well, my LED strips are, according to the tracking info, only a couple of days away from arriving.
However, in doing some research into the kind of power savings I could expect by switching from CCFL in the Cintiq to using the DIY LED strips, I was a little surprised to learn that it probably won't be a whole lot.
Here's an example...http://www.tomshardware.com/reviews/ccfl-led-backlight,2930-5.html
The venerable Cintiq 21UX draws approximately 54 watts when in full use at full brightness. However, when compared to similarly built monitors of the day which run instead on LED lighting, the power savings were negligible. It seems that the internal electronics driving the LCD and other hardware is where the wattage is used up, and that a good CCFL bulb and an LED strip draw about the same energy.
Enter modern monitor electronics...
New market competitor, UGEE, with their UG-2150 (a Cintiq alternative) offers a 1080p 21.5" modern screen, and for whatever reason, (advances in basic video electronics perhaps?), manages to draw only a modest 18.5 watts.
Now, I was hoping that by converting to LED that I could drop the Cintiq down to around the same level seen in the UGEE, but according to the tests run on similar old screen tech, it seems that I may be disappointed; that the hungry components aren't necessarily the old-style CCFL bulbs, but rather the rest of the electronics.
To help answer this question, I ordered one of these...http://www.amazon.com/P3-International-P4460-Electricity-Monitor/dp/B000RGF29Q/ref=sr_1_2?s=electronics&ie=UTF8&qid=1435379558&sr=1-2&keywords=kill-a-watt+meter
I'll do some before-and-after testing to see what is what.
And mind you, none of this is terribly vital; my solar studio is really just a nerdist's playground for tinkering. But notwithstanding that, when it comes to running gear off big deep cycle 12 volt batteries, the difference between 54 watts and 18.5 translates into some huge real-world effects.
Here's some of the math...
Estimate about 30 watts drawn (on average) by the laptop I'm using, plus around 10-15 watts for lighting and incidentals, (like external hard drives and such), plus 54 watts for the Cintiq, and we're looking at around 100 watts for the whole studio system.
On a two-battery set-up (each rated for 100 Amp hours), you run the following formula: Watt hours = Voltage * Amp hours, or 12 * 200 = 2400 watt hours.
You can only drain batteries to the half-way mark (otherwise you damage them), so divide that again by 2, and you get 1200 usable watt hours.
With a system drawing 100 watts, we see that we can run it for 12 hours before having to shut down. Not bad. That's a full day's work plus some, but if this is your daily work station and you are relying entirely on the Sun for energy, if you string a couple of cloudy days into your week, the system will very quickly demonstrate the upper limits of its utility. One can see that carving a few watts off the load here and there can make a big difference.
For instance, if we pull the Cintiq out of the equation and replace it with that 18.5 watt UGEE, the whole system will instead be drawing around 63 watts. This means we're getting 19 hours on a full charge. A difference of a full 7 hours!
You can perhaps begin to see why I'm interested in curbing the Cintiq's appetite.
Now.., just to play a bit with the math here... if I were truly living out in the woods, or if the power grid was down for an extended time, (and the world was not ending and still had a need for cartoonists), I could make the same solar system really earn its keep. -I could unhook most of the systems from my little studio grid, LED lights and extra hard drives and my little USB external monitor, and fire up instead my old Tecra M4 tablet PC, a computer and Penabled drawing screen in one, which does it all for only around 35 watts. -So now that 1200 watt battery array can provide 34 hours
of up-time between charges. Not bad!
But in any case, it will still be interesting to know what pulling the four CCFL bulbs and their inverters from the Cintiq and replacing them with a pair of modern LED strips will do for its power appetite. If it makes a significant difference, then that's good! -I mean, if you can get a Cintiq running at a comparable rate, then why not make your off-the-grid studio all the more comfy?