12V/24V 20A Controlador de carga USB automático Solar Panel LCD Pantalla PWM Regulador
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Lieferung kam schneller als erwartet Produkt sieht Wertig aus würde diesen laderegler wieder bestellen
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Worked well with 20W panel and 35 Ah battery. I found that it can't stop overvoltage without load, so when the 12V gets full I plug in a lithium power bank to the USB output for slow charge.
Item works very good, i have it hooked up to a simple homemade solar panel and a Gel Battery, using it as an off-grid USB power source now.