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66% OFF 5V 2A Painel Solar Power Bank Carregador USB Controlador de Voltagem Módulo Regulador 6V 20V Entrada US$3.40 US$9.99 View It

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tejminatoj 23/11/2019

I wanted to use it with this solar panel: https://www.banggood.com/Portable-5W-12V-Polysilicon-Solar-Panel-Battery-Charger-For-Car-RV-Boat-W-3m-Cable-p-1449442.html?rmmds=myorder to power a wemos d1 mini using the power hat and a 18650 battery. Unfortunately the 14V open circuit voltage of the solar panel drops to around 4V when connected to this charge panel and it cannot provide power on the USB output as the minimum working input voltage is rated to 6V. So this panel cannot be used in this situation. I cannot decide now what is wrong, the solar panel, the charge panel, or the planed usage type.

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BG541637114 https://www.banggood.com/6V-4_5W-520mAh-Mini-Epoxy-Monocrystalline-Solar-Panel-p-987805.html this panel works well with this module, thanks to youtuber https://www.youtube.com/watch?v=ClRJoQJUv8M
Resposta 27/07/2022

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