--- product_id: 109609022 title: "900mA MPPT Solar Panel Controller - Solar Power Manager Module for 5V Solar Panel - Support Solar and USB Charging" brand: "dfrobot" price: "€ 26.80" currency: EUR in_stock: true reviews_count: 9 category: "Dfrobot" url: https://www.desertcart.pt/products/109609022-900ma-mppt-solar-panel-controller-solar-power-manager-module-5v store_origin: PT region: Portugal --- # 900mA max charging current MPPT tech for max solar efficiency 5V 1A regulated USB output 900mA MPPT Solar Panel Controller - Solar Power Manager Module for 5V Solar Panel - Support Solar and USB Charging **Brand:** dfrobot **Price:** € 26.80 **Availability:** ✅ In Stock ## Summary > 🔆 Power your future with smart solar efficiency — never miss a watt! ## Quick Answers - **What is this?** 900mA MPPT Solar Panel Controller - Solar Power Manager Module for 5V Solar Panel - Support Solar and USB Charging by dfrobot - **How much does it cost?** € 26.80 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/109609022-900ma-mppt-solar-panel-controller-solar-power-manager-module-5v) ## Best For - dfrobot enthusiasts ## Why This Product - Trusted dfrobot brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Maximize Solar Power ⚡:** Advanced MPPT algorithm extracts peak energy from your 5V solar panel, boosting charge efficiency. - • **Reliable 900mA Charging 🔋:** Delivers up to 900mA to 3.7V Li-ion batteries, ensuring fast and stable power replenishment. - • **Versatile Dual Charging 🔌:** Supports both solar panel and USB input, giving you flexible, anytime-anywhere charging options. - • **Built-in Safety First 🛡️:** Comprehensive protections against overcurrent, overdischarge, and output faults safeguard your battery and devices. - • **Compact & Durable Design 🏗️:** Lightweight aluminum casing fits seamlessly into any solar project, built to last and perform. ## Overview The 900mA MPPT Solar Panel Controller by DFROBOT is a compact, high-efficiency power management module designed for 5V solar panels. Featuring Maximum Power Point Tracking technology, it optimizes solar energy harvesting to deliver up to 900mA charging current to 3.7V Li-ion batteries. With dual solar and USB charging support, regulated 5V 1A output, and robust safety protections, this module is ideal for smart solar projects like environmental monitors, solar-powered robots, and portable solar lamps. ## Description Buy 900mA MPPT Solar Panel Controller - Solar Power Manager Module for 5V Solar Panel - Support Solar and USB Charging: Energy Controllers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Does all the things and does them well - except maybe the boot button? - I'm using this to power a MeshCore repeater. On the MPPT side of things, I checked it after a day of operation and it seems to keep the 18650 batteries (wired in parallel) close to 4.2v using a small 5w pannel. On the output power side of things, the regulated 5v measures at 5.11v (on both output USB and pins) and didn't dip while under test, so it seems to keep up with power demand just fine. I was not able to detect any noise on the 5v output using my Xminilab oscilloscope, but I put a 1000uF capacitor on it anyway to reduce the possibility of signal interference. When I first plugged in the battery, I noticed that it powered on by itself (desirable for this use case). When I later unplugged the battery and plugged it back in, I had to press the "boot" button get the output going again. I hope this is not a button I have to press in the scenario where the batteries fully discharge and charge up again. Time will tell. Review: Good buy, quality item. - Worked well for what I needed. I used this for a solar project for my son. It has all the connections that you would need and is very well made. Good price for a good item. ## Features - Solar Power Manager 5V is a small power and high-efficiency solar power management module designed for 5V solar panel.It features as MPPT (Maximum Power Point Tracking) function, maximizing the efficiency of the solar panel. - The module can provide up to 900mA charging current to 3.7V Li battery with USB charger or solar panel. The ON/OFF controllable DC-DC converters with 5V 1A output satisfies the needs of various solar power projects and low-power applications. - The module also employs various protection functions for battery, solar panel and output, which greatly improves the stability and safety of your solar projects. - AS Solar Power Manager 5v V1.1 (Newest Version), battery (BAT IN) overcurrent and overdischarge protection is added to improve battery safety. It can be use for 3.7 lipo battery no matter it is packed with protection circuits or not. - APPLICATIONS: Smart solar environment monitor system; Solar powered robot; Small solar street lamp; Solar power bank. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07MML4YJV | | Best Sellers Rank | #86,315 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #62 in Renewable Energy Controllers | | Brand | DFROBOT | | Brand Name | DFROBOT | | Color | brown|green|black|yellow | | Customer Reviews | 4.4 out of 5 stars 121 Reviews | | Display Type | Software | | Item Weight | 0.07 Kilograms | | Manufacturer | DFROBOT | | Material | Aluminum | | Material Type | Aluminum | | Model | DFR0559 | | Part Number | DFR0559 | | Smart Home Compatibility | Not Smart Home Compatible | | Unit Count | 1.0 Count | | Voltage | 5 Volts | ## Product Details - **Brand:** DFROBOT - **Color:** brown|green|black|yellow - **Item Weight:** 0.07 Kilograms - **Material:** Aluminum - **Voltage:** 5 Volts ## Images ![900mA MPPT Solar Panel Controller - Solar Power Manager Module for 5V Solar Panel - Support Solar and USB Charging - Image 1](https://m.media-amazon.com/images/I/61mU5S0ROXL.jpg) ## Questions & Answers **Q: if no power is going through the solar panel, can this be set to automatically turn on? In other words does the 5v auto turn on when it gets dark?** A: It automatically turns on when power is supplied from the panel. In the interim it draws from the battery. **Q: How do i mount the cooling fin? is that what the 3m tape is for? and i it suppose to have direct contact?** A: That is a good question. I didn't put on my unit and it is working fine. **Q: what is the minimum voltage from solar panel needed? my location is partialy shaded so I get 5.5 in direct sunlight in morning and 3.5 in afternoon** A: The minimum voltage required from the solar panel is 4.4-6V. In your case, you could connect a 3.7V Lipo battery at the BAT IN side. When the sunlight is not strong, the device can be powered by the lithium battery. When the sunlight is intense, the solar panel can power the device and also charge the lithium battery. **Q: Open circuit voltage is 7.2V operating is 6 volts on my solar panels will this work with solar power manager 5 volt 6 volts max** A: I had a little trouble with one of mine that had open circuit voltage above 6v. I opted for installing a step down circuit to drop it to 5v and it works like a champ. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Does all the things and does them well - except maybe the boot button? *by J***S on April 1, 2026* I'm using this to power a MeshCore repeater. On the MPPT side of things, I checked it after a day of operation and it seems to keep the 18650 batteries (wired in parallel) close to 4.2v using a small 5w pannel. On the output power side of things, the regulated 5v measures at 5.11v (on both output USB and pins) and didn't dip while under test, so it seems to keep up with power demand just fine. I was not able to detect any noise on the 5v output using my Xminilab oscilloscope, but I put a 1000uF capacitor on it anyway to reduce the possibility of signal interference. When I first plugged in the battery, I noticed that it powered on by itself (desirable for this use case). When I later unplugged the battery and plugged it back in, I had to press the "boot" button get the output going again. I hope this is not a button I have to press in the scenario where the batteries fully discharge and charge up again. Time will tell. ### ⭐⭐⭐⭐⭐ Good buy, quality item. *by C***S on January 30, 2025* Worked well for what I needed. I used this for a solar project for my son. It has all the connections that you would need and is very well made. Good price for a good item. ### ⭐⭐⭐⭐ Good, but doesn't restart if battery dies *by P***L on March 23, 2021* Good product, works as advertised. Fully charges the battery from solar, and the reverse indicators are nice to have, just in case. Only con is that if the battery fully dies, the circuit won't restart outputting power to the load. It will recharge the battery, but I have to disconnect and reconnect the load in order to get power to flow again, which is obviously not ideal for applications where the circuit is less accessible. Paired with a large enough battery though, this shouldn't be a concern. ## Frequently Bought Together - 900mA MPPT Solar Panel Controller - Solar Power Manager Module for 5V Solar Panel - Support Solar and USB Charging - FellDen Micro Solar Panels with Wire, 5PCS 5V 200mA Photovoltaic Solar Cells Kit 110mmx60mm / 4.33''x 2.36'' - RAKwireless WisBlock Meshtastic Starter Kit US915 Base RAK19007 + Core RAK4631 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/109609022-900ma-mppt-solar-panel-controller-solar-power-manager-module-5v](https://www.desertcart.pt/products/109609022-900ma-mppt-solar-panel-controller-solar-power-manager-module-5v) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-09-05*