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Painel Solar Portátil de 10W 12V com Clipe de Bateria + Kit Controlador Solar de 40A para Camping e Viagens US$27.59 US$28.99 View It

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jns 22/02/2021

This panel measures 186mm x 317mm for solar, less the areas covered by conductors. The gross solar input is 58.96W at the AM1.5 standard. At assumed 20% efficiency, the output is 11.79W. Test values of 0.53A at 16.43V resulted in a calculated 8.7079W. The sun was measured at 98,000LUX a bit later at 34 north on 2021/02/21. At AM1.5 there should be about 10% more power. A little of the voltage and power was lost in the 3 meter wires for the clips but it wasn't significant. Considering the additional 10%, this panel comes close to the 10W advertised output. Also considering that it comes with a controller and an aluminum frame, it is a great value. If it is used to directly charge a 12V battery, the voltage should be down to the battery voltage and the current will rise slightly but the power output will be less and the battery could be overcharged if the voltage rises too much (13.8V max standby on a 12V 12AH SLA battery). This is my first purchase of this panel.

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jns Testingthe controller. Initially it was only allowing parameters for 24V batteries, but today it was adjustable for 12V batteries. It seems to work correctly.
Resposta 22/03/2021

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