Primary batteries (non rechargeable) have a shelf life, so remember this when prepping. Rechargeable or secondary batteries have a limited number of charge times, dependent on type, charge speed, and discharge Cut off levels.
Always plan worst case use!
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Those are good points :) How about those little fold up wallet / backpack solar units? Some can even provide direct power without a battery bank. But are they any good?
!LUV
@wrestlingdesires(3/5) gave you LUV.
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Cute, ROFLOL!
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They are usually low power, but enough to make a difference. Good in a bug out bag, but usually only 10 watts or so. But some power is better than none!
The big panels are 250 watts, and will charge my batteries in parallel, but they are not portable! But, trade offs can be helpful. Smaller systems have their place!
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Are the big ones hard to install?
They are 4 by 2 foot, and weigh about 25 pounds. I have seen them leaned at the right angle, at ground level.
I plan a much more complex mounting that tracks the Sun.
Pick your poison, and install it!
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For me price matters 😂
!PIZZA
Harbor freight has a decent system, that is low cost.
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Thanks :)