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Question:

Solar panel for macbook?

looking for a solar panel to charge my laptop on the road, macbook is 60 watt 6.v 3.5a, what should i be looking for in a solar panel?

Answer:

Well that's a good idea,,,here's what ya need..First you need an array that will overcome the drain effect created by the in use or sleeping laptop...that is best solved by averaging out the real use of the machine in terms of watt/minutes...If you check your transformer you'll see it has a capacity which you have cited however the true use of the computer is about 40-50 percent of that in watt/minutes..but only while your using it and when in the sleep mode the watt/minute value drops even more to about 5%.... So if your actual use consists of 2 hours of use per day at 50% and 2 hours at 5% percent the actual wattage draw is only averaged out at 34watts/minute. optimally your panel should supply all your power from its photovoltaic conversion ,but in the real world application the panel only recharges ,over a period of time, the used power. So if you had a 5 watt (@ 2vdc) panel working 480 minutes and used up 35 x2=700 and 9 x2=8 for a total of 78 watts you would have 5 x 480 = 7200 watts input and a parasitic load of 78 watts in the two hours...well within the recharge state required.. For a little safety I would permanently wire a cigarette lighter type plug to the end of the panel this will keep the polarity correct and serve as a quick disconnet means...Also add a fuse at .5 amp... a good place to get these are on the internet....some are very expensive some a very cheap --go for a middle of the roader...Have a good one from the E...
an significant questions is what voltage output is the skill grant? what's the wattage while the laptop has been used for hours and then related to the charger with the computing device off? this often is the skill attracted to can charge the batteries. Your answer desires to be waiting to take action skill score. additionally thinking the fashion of Apple skill plug the relationship thoughts would be few. fold-able image voltaic panels + small 2 volt battery + inverter + Apple skill grant or fold-able image voltaic panels + DC to DC regulator for particular Apple computing device DC voltage which contains the recommendations-blowing plug and polarity. Can a internet-e book or pill or clever-telephone meet your vacationing computing desires? all of them use much less skill and could require much less image voltaic kit.

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