For my solar power system, I replaced the charge controller because the old one stopped working. The charge controller prevents extra power from being sent to the storage battery once it is full. This extra power goes to waste unless I can find a use for it right away. I can charge things like phones, laptops, power banks, or tool batteries. Or I can use an inverter for small devices like a pencil sharpener. The inverter can't handle larger devices.
Next, I created a window pass-through cable. I used foil tap inside a vacuum sealed bag so the panel can be on outside on the roof to reach more sunlight and the window stays closed to keep the heat and noise out.
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