DFRobot Solar Power Manager with Panel (5V 1A) MPPT Solar Charge Controller

Power your IoT and renewable energy projects reliably with the DFRobot Solar Power Manager 5V. This compact, high‑efficiency module is optimized for 5V solar panels and features an integrated MPPT (Maximum Power Point Tracking) algorithm to extract maximum energy from your panel in real time. Ideal for makers, engineers, and off‑grid applications, it offers smart power management in a small footprint. The board supports dual charging inputs, allowing you to charge a single‑cell 3.7V Li‑ion/Li‑Po battery from either a 5V solar panel or a USB source, with up to 900mA charging current. It uses a three‑stage charging process (trickle, constant current, constant voltage) and stops automatically at 4.2V±1% to protect battery life and improve safety. A built‑in 5V/1A high‑efficiency DC‑DC converter (up to 86% efficiency at 50% load from a 3.7V battery) provides a stable, ON/OFF‑controllable power output for low‑power embedded systems, sensors, controllers, or small robotic platforms. Typical applications include: - Smart solar environmental monitoring stations - Solar‑powered robots and mobile devices - Small solar street or garden lamps - DIY solar power banks and portable IoT nodes Designed with robust protection circuitry, the Solar Power Manager 5V safeguards every part of your system: - Battery (BAT IN): over‑charge, over‑discharge, over‑current, and reverse‑connection protection - 5V / USB OUT: short‑circuit, over‑current, and over‑temperature protection - Solar input (SOLAR IN): reverse‑connection protection A shielded USB connector with ESD protection makes it easy to connect standard USB power sources safely. Ultra‑low quiescent current (<1mA) helps maximize runtime in always‑on or standby scenarios, while the wide operating temperature range (-40°C to 85°C) ensures stable performance in harsh outdoor environments. Key Specifications: - Solar Power Management IC: CN3165 - Solar Input Voltage (SOLAR IN): 4.5V–6V (for 5V solar panels) - Battery Input: 3.7V single‑cell Li‑ion/Li‑polymer - Max Charge Current (USB/SOLAR IN): 900mA - Charging Cutoff Voltage: 4.2V±1% - Regulated Output: 5V, up to 1A - DC‑DC Efficiency (from 3.7V BAT IN): up to 86% @ 50% load - USB / Solar Charging Efficiency: up to 73% @ 3.7V 900mA - Quiescent Current: <1mA - Operating Temperature: -40°C to 85°C - PCB Dimensions: 33.0mm × 63.0mm If you need a reliable way to harvest solar energy and provide a clean 5V rail for your electronics, this module delivers a ready‑to‑use, well‑protected solution that shortens development time and improves long‑term system stability.