--- product_id: 10059624 title: "300W Permanent Magnet DC Generator, 12V–24V, 3/8-Inch V-Belt Pulley, Ventilated Housing for Bicycle and DIY Power Projects, PPG-PM300-P" brand: "pedal power generator" price: "€ 380.21" currency: EUR in_stock: true category: "Pedal Power Generator" url: https://www.desertcart.pt/products/10059624-300w-permanent-magnet-dc-generator-12v-24v-3-8-inch store_origin: PT region: Portugal --- # 300W max output Voltage scales with RPM 3/8-inch V-belt pulley 300W Permanent Magnet DC Generator, 12V–24V, 3/8-Inch V-Belt Pulley, Ventilated Housing for Bicycle and DIY Power Projects, PPG-PM300-P **Brand:** pedal power generator **Price:** € 380.21 **Availability:** ✅ In Stock ## Summary > ⚡ Pedal, Power, Prevail — Energize Your DIY Revolution! ## Quick Answers - **What is this?** 300W Permanent Magnet DC Generator, 12V–24V, 3/8-Inch V-Belt Pulley, Ventilated Housing for Bicycle and DIY Power Projects, PPG-PM300-P by pedal power generator - **How much does it cost?** € 380.21 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/10059624-300w-permanent-magnet-dc-generator-12v-24v-3-8-inch) ## Best For - pedal power generator enthusiasts ## Why This Product - Trusted pedal power generator brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Plug & Play Setup:** Includes digital voltmeter, wiring, and mounting bolts for seamless integration into your bike or custom rig. - • **Built to Last & Cool:** Ventilated metal housing ensures optimal heat dissipation during extended use—reliable and rugged. - • **STEM-Ready Innovation:** Ideal for classroom demos and renewable energy projects that make you the trendsetter in sustainable tech. - • **Dynamic Voltage Output:** Voltage ramps from 3.6V at 500 RPM to 17V at 3,000 RPM, giving you precise control over your power needs. - • **Power Your Pedal Projects:** Generate up to 300W of clean, human-powered electricity—perfect for eco-conscious DIYers. ## Overview The PPG-PM300 is a 300W permanent magnet DC generator designed for belt-driven applications like bicycle and DIY renewable energy projects. It delivers variable DC voltage output proportional to rotational speed, ranging from 3.6V at 500 RPM up to 17V at 3,000 RPM. Equipped with a 3/8-inch V-belt pulley, digital voltmeter, wiring, and mounting hardware, it supports 12V battery charging when paired with appropriate controllers. Its ventilated metal housing ensures durability and heat management, making it ideal for STEM education, sustainable power experiments, and hands-on innovation. ## Description The PPG-B300 Permanent Magnet DC Generator is a belt-driven generator that produces DC voltage in proportion to its rotational speed. The faster the generator shaft turns, the higher the voltage output. Approximate Voltage Output by Speed Generator Speed DC Voltage Output 500 RPM 3.6V DC 750 RPM 4.9V DC 1,000 RPM 6.0V DC 1,500 RPM 9.5V DC 2,000 RPM 12.2V DC 2,500 RPM 14.5V DC 3,000 RPM 17.0V DC Actual output may vary depending on rotational speed, electrical load, drive ratio, wiring, and system efficiency. Battery-Charging Applications The PPG-B300 can be used as part of a properly designed 12V battery-charging system. A compatible blocking diode, fuse, charge controller, and voltage-regulation equipment may be required to protect the generator, battery, and connected devices. Always confirm the charging requirements and maximum input voltage of the battery or charge controller before connecting the generator. Bicycle Generator Installation For a typical pedal-power installation, mount the generator securely to a sturdy plywood platform. Place a compatible bicycle stand on the same platform so the generator and bicycle remain aligned during operation. Remove the rear bicycle tire and use an adjustable size 3L PowerTwist V-belt to connect the rear wheel rim to the generator pulley. Adjust the generator position and belt tension to provide smooth rotation without excessive pressure on the pulley or bearings. The bicycle, bike stand, plywood platform, V-belt, wiring, battery, fuse, diode, charge controller, and regulator are not included unless specifically stated in the package contents. Portable Power Station Applications The generator may also be used with certain portable power stations when connected through the correct charging controller or voltage regulator. The generator output must remain within the power station’s approved input-voltage range. Compatibility depends on the power station’s: Input-voltage range Current limit Connector type Polarity Charging protocol Voltage-regulation requirements Do not connect the generator directly to a portable power station unless the charging method has been confirmed as compatible. STEM and Classroom Projects The PPG-B300 is suitable for demonstrations involving science, technology, engineering, art, and mathematics. Students can explore mechanical energy, rotational speed, electrical generation, voltage, current, and energy conversion. For example, the generator may power a compatible electrical load as a rider pedals the bicycle, creating an interactive demonstration of human-powered electricity. Package Includes - 1 PPG-B300 permanent magnet DC generator - 1 installed 3/8-inch V-belt pulley - 4 mounting bolts - 1 digital voltmeter - 3 feet of red wire - 3 feet of black wire ## Features - 300W PERMANENT MAGNET DC GENERATOR: Belt-driven generator designed to convert rotational energy into variable DC electrical output for pedal-power, wind, hydro, classroom, and other DIY projects. - OUTPUT INCREASES WITH ROTATIONAL SPEED: Produces approximately 3.6V at 500 RPM, 6V at 1,000 RPM, 12.2V at 2,000 RPM, and 17V at 3,000 RPM. Actual output depends on speed, load, wiring, and system efficiency. - 3/8-INCH V-BELT PULLEY: Includes an installed pulley compatible with a size 3L V-belt for connection to a bicycle wheel or other belt-driven mechanical system. - SUPPORTS 12V BATTERY-CHARGING PROJECTS: Can be used to charge compatible 12V batteries when connected through the appropriate fuse, blocking diode, charge controller, and voltage-regulation equipment. - VOLTMETER AND WIRE INCLUDED: Package includes one digital voltmeter, 3 feet of red wire, 3 feet of black wire, an installed pulley, and four mounting bolts for setup and output testing. - VENTILATED METAL HOUSING: Built-in ventilation openings help release heat during operation, while the sturdy mounting base allows the generator to be secured to a suitable platform. - DIY AND STEM APPLICATIONS: Suitable for bicycle generators, renewable-energy demonstrations, classroom experiments, and custom power projects. Bicycle, stand, belt, battery, controller, regulator, and mounting platform are not included. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B001WB3TZ4 | | Additional Features | 3-Foot Red and Black Wires Included, 3/8-Inch 3L V-Belt Pulley, Built-In Ventilation, Permanent Magnet DC Generator, Variable DC Voltage Output | | Best Sellers Rank | #505,541 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #1,118 in Outdoor Generators | | Brand Name | Pedal Power Generator | | Color | Black | | Current Rating | 15 A | | Customer Reviews | 3.6 3.6 out of 5 stars (14) | | Engine Power Maximum | 300 watts | | Engine Type | electric | | Fuel Type | None (or human, wind, hydro) | | Ignition System Type | magnet | | Included Components | 1 PPG-B300 permanent magnet DC generator, 1 installed 2-inch pulley for a 3/8-inch size 3L V-belt, 4 mounting bolts, 1 digital voltmeter, 3 ft red wire, and 3 ft black wire | | Item Dimensions L x W x H | 5"L x 6"W x 5"H | | Item Weight | 8 pounds | | Manufacturer | Pedal Power Generator | | Manufacturer Part Number | PPG-B300 | | Material Type | Metal | | Model Name | PPG-B300 | | Model Number | 300W-DC 12V-24V | | Output Wattage | 300 watts | | Power Source | Pedal Powered by Human Power | | Recommended Uses For Product | 12V Battery-Charging Systems, Bicycle Generator Projects, DIY Renewable Energy Projects, Human-Powered Electricity Experiments, Pedal Power Generation, STEM Classroom Demonstrations | | Running Wattage | 300 watts | | Starting Wattage | 300 watts | | UPC | 837654324868 | | Voltage | 40 volts | | Wattage | 300 watts | ## Product Details - **Brand:** Pedal Power Generator - **Fuel Type:** None (or human, wind, hydro) - **Item Weight:** 8 pounds - **Output Wattage:** 300 watts - **Power Source:** Pedal Powered by Human Power - **Voltage:** 40 volts - **Wattage:** 300 watts ## Images ![300W Permanent Magnet DC Generator, 12V–24V, 3/8-Inch V-Belt Pulley, Ventilated Housing for Bicycle and DIY Power Projects, PPG-PM300-P - Image 1](https://m.media-amazon.com/images/I/61n1mLKbGpL.jpg) ## Questions & Answers **Q: does direction of rotation matter for output?** A: If you want to rotate clockwise then connect the negative wire (black one) to the negative one of the thing you want to power. The red one should go with the positive end. You can rotate in the other direction, but then the black wire is positive and the red one is negative so you just have to keep that in mind. **Q: What are the lowest rpms that it can run to produce roughly 100watts? OR what is the curve?** A: That is good resistance, the answer is based on what the resistance is of what you are trying to power up. Are you going to power up a light? A battery? A cell phone? Keep in mind that nearly any electrical system is less efficient at lower Voltages because of losses due to resistance in the wire and in the armature of the generator. Is efficiency an issue? Making the assumption that we are going to run at 500 RPMs (revolutions per minute), then you would see approximately 3 Volts DC coming from the generator. If you want 100 Watts of power at 3 Volts then the current going through your load would need to be about 33.3 Amps The generator is not rated for that much current. So if we double that speed to 1000 Watts, you would get about 6 Volts from the generator. At this point you would need about 15 Amps of current to deliver 100 Watts to the load. 6 Volts divided by 15 Amps would be 0.4 Ohms resistance. (Volts / Amps = Resistance). Does this answer your question? Best regards and good luck with your project, Bradley Whaley ELectrical Engineer Pedal Power Generators **Q: can it be used with a bicycle in movement or only a stationary one?** A: When you attach this generator while moving it will add resistance to your pedaling so that you will have to work harder than normal. So for instance if you wanted to put a 20 Amp Hour 12V Battery onto your bike and charge the battery while you ride the bike around town. This would make it very hard to make your bike go faster than 5 miles per hour because it would place such a drag on your tire. If you installed a button on your handle bars for regenerative breaking, then you could use this button when you go down a hill or only when you want to stop the bike, that way you could harvest the kinetic energy (1/2 x Mass x Velocity) from your bike and put it into the battery. **Q: Can it be used to charge a 48v ebike battery?** A: You will have to have a inverter On a bike this gen. will make 12v or 24v. unevenly. That is not the gen. It's the pedaling on the bike. If you put a charge controller for a wind mill it will even out the highs. and the lows. Then invert to 48v ## Frequently Bought Together - 300 Watt Bicycle Generator 3/8" Belt Drive Pedal Power Pulley Dynamo - Porch Shield Waterproof Universal Generator Cover 26 x 20 x 20 inch, for Most Generators 3000-5000 Watt, Light Tan - Scepter FR1G152 Fuel Container with Spill Proof Smart Control Spout with Bonus Spout Extender, Red Gas Can, 1 Gallon --- ## 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/10059624-300w-permanent-magnet-dc-generator-12v-24v-3-8-inch](https://www.desertcart.pt/products/10059624-300w-permanent-magnet-dc-generator-12v-24v-3-8-inch) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-08-26*