The DFRobot Micro Solar Power Manager is a compact MPPT (Maximum Power Point Tracking) solar charging module that harvests energy from small solar panels (6V–24V input) to charge 3.7V Li-ion and LiPo batteries while simultaneously providing a regulated 5V USB output. Its MPPT algorithm maximizes power extraction from the panel under varying light conditions, and built-in protection circuits guard against over-charge, over-discharge, and short-circuit events — making it a reliable power core for always-on outdoor IoT sensor nodes.
Specifications
- Solar Input: 6V–24V (suitable for 5V–18V solar panels)
- MPPT: Maximum Power Point Tracking for optimal solar harvesting
- Battery Type: Li-ion / LiPo (3.7V nominal)
- Charging Current: Up to 900mA
- Output Voltage: 5V regulated USB output
- Output Current: Up to 1A (5V output)
- Protection: Over-charge, over-discharge, over-current, short-circuit
- Interfaces: JST Li-ion connector, Micro USB output, solar panel terminal
- Dimensions: Compact module, suitable for field deployment
Key Features
- MPPT algorithm maximizes solar energy harvest from small panels (3W–10W)
- Charges Li-ion/LiPo battery while simultaneously powering the load
- 5V USB output powers Arduino, Raspberry Pi Zero, and ESP32-based boards directly
- Full battery protection suite prevents damage from over/under-charging
- Compact form factor for embedding in outdoor enclosures
- Works with any solar panel providing 6V–24V open-circuit voltage
- Suitable for always-on IoT sensor nodes powered entirely by solar energy
- Gravity connector compatible with DFRobot ecosystem
Applications
- Solar-powered outdoor IoT sensor nodes (weather, soil, air quality)
- Remote wildlife monitoring cameras with solar recharging
- Off-grid Arduino and ESP32 data loggers
- Solar-powered Raspberry Pi Zero field stations
- Smart agriculture sensor networks with solar harvesting
- Emergency communication beacons with solar backup
- Educational solar power and energy harvesting projects
- STEM renewable energy curriculum demonstrations
Package Includes
- 1x DFRobot Micro Solar Power Manager Module
- Note: Solar panel and LiPo battery sold separately
FAQ
- Q: What size solar panel do I need? A: A 3W–10W panel (5V–18V) works well. Larger panels are fine — MPPT adjusts automatically.
- Q: Can I power an Arduino and charge simultaneously? A: Yes — the module provides 5V output while charging the battery. As long as solar input is available, both operate in parallel.
- Q: Does it work without a battery (solar-only mode)? A: Some models support pass-through mode. Check the Wiki for your specific variant.
- Q: How long to charge a 1000mAh LiPo from empty? A: At 900mA charging rate, approximately 1.5–2 hours in good sunlight with an adequate panel.
- Q: Is it weatherproof? A: The module itself is not sealed — mount in a weatherproof enclosure for outdoor deployment.