Solar panels is by absorbing sunlight, the solar radiation through the photoelectric effect or photochemical effect directly or indirectly converted into electrical energy device, the main material of most of the solar panel as the "silicon", but because of the production cost is very big, so that it can't be extensive and widespread use.Okorder have professional solar manufacturers, can communicate online directly.
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between the solar panel and the battery there must a charge controller -- otherwise your battery won't last very long.
the charge controller decides what voltage levels to set against the load and the battery given the input levels from the panel. this idea is important because the output from the panel is not constant. the voltage can fluctuate greatly along with the current as sun conditions change.
this will allow you to get a better handle on the charge side and the load side.
on the charge side, you only need to worry about how much capacity your battery array has, and what it's current state of charge is.
then on the load side, you worry about maximum current draw and how long you can sustain the requied current given the state of charge of the battery array.
you basically assume that the battery is providing all the current needed to drive the load, and the current from the solar panel is what it is -- because the current drawn by the load tends to be much greater than the current that can be produced by the solar array.
using this concept model, you don't worry about how much current going to the load is coming from the battery and how much is coming from the panel, you only need to worry about whether your battery array can provide the current draw required by the load at any given time and for what maximum interval; and you worry about the rate at which the panel is replacing that current.
this is why the core unit of measurement in working with solar battery systems is amp-hours (charge) rather than watts. watts are a comparatively useless relative measure until you tell me how long you are running that equipment -- then i can convert watt-hours to amp hours and make assessments of that current/charge draw against my battery array.
If you had a solar panel rated at 1kW that was storing energy via a battery pack, could you put a load which was in excess of 1kW on that circuit if it was not a continuous load? The way I understand it is if you were to put a load of 1500W on that circuit, the battery would discharge 1.5 times as fast as it would charge (assuming the panels are receiving full sunlight). That would mean that the load could only run for 2 hours every 3 hours, right?
