Forest Grass USA Solar Panel Power Bank USB Charge Voltage Controller Regulator Module 6V 20V Input

Solar USB Charge Controller

This voltage regulator module accepts 6V to 20V input from a solar panel and delivers a steady 5V USB output at up to 2000mA. It is built for hikers, campers and off-grid tinkerers who need to charge phones, tablets or cameras directly from sunlight without a separate battery bank. The board measures 35x40x15mm and weighs very little, so it fits easily in a pack or project enclosure.

Simple Wiring and Auto Recovery

Installation requires only two connections from the panel to the input terminals and a standard USB cable to the output. The module automatically identifies attached devices and restarts charging when sunlight returns after a cloudy period, so there are no buttons to press or settings to adjust. Reverse polarity on the input or an oversized panel exceeding 20V will prevent operation or damage the regulator.

Steady Output Under Variable Light

Conversion efficiency is rated at 95%, so most of the panel's power reaches the USB port even when irradiance fluctuates. The constant 5V rail holds stable during prolonged charging sessions, and the automatic restart function keeps the supply alive through passing clouds without user intervention. Sustained loads near the 2000mA limit are supported as long as the panel provides sufficient voltage and current.