--- product_id: 10059624 title: "300 Watt Permanent Magnet DC Pulley Generator 3/8\" V-Belt Drive Pedal Power Pulley Dynamo with air ventilation holes PPG-PM300-P" brand: "pedal power generator" price: "1808.97 DT" currency: TND in_stock: true reviews_count: 8 category: "Pedal Power Generator" url: https://www.desertcart.tn/products/10059624-300-watt-permanent-magnet-dc-pulley-generator-3-8-v store_origin: TN region: Tunisia --- # 300W Peak Power 3/8" V-Belt Pulley Drive 15A Nominal Current 300 Watt Permanent Magnet DC Pulley Generator 3/8" V-Belt Drive Pedal Power Pulley Dynamo with air ventilation holes PPG-PM300-P **Brand:** pedal power generator **Price:** 1808.97 DT **Availability:** ✅ In Stock ## Summary > ⚡ Pedal Your Power, Own Your Energy Revolution! ## Quick Answers - **What is this?** 300 Watt Permanent Magnet DC Pulley Generator 3/8" V-Belt Drive Pedal Power Pulley Dynamo with air ventilation holes PPG-PM300-P by pedal power generator - **How much does it cost?** 1808.97 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/10059624-300-watt-permanent-magnet-dc-pulley-generator-3-8-v) ## 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 - • **Built to Last & Cool:** Robust metal construction with air ventilation holes keeps the generator cool during extended use. - • **Versatile STEAM Tool:** Perfect for hands-on learning in classrooms or DIY projects—turn pedal power into real-world electricity. - • **Power Your Adventures:** Generates up to 300 Watts of clean, pedal-powered energy—perfect for off-grid charging and sustainable living. - • **Charge with Confidence:** Delivers a steady 0-40V DC output, ideal for safely charging 12V deep cycle batteries via charge controllers. - • **Smooth & Efficient Drive:** 3/8" V-belt pulley system ensures quiet, reliable power transfer with minimal wear and tear. ## Overview The 300 Watt Permanent Magnet DC Pulley Generator (PPG-PM300-P) is a compact, belt-driven dynamo designed to convert human pedal power into reliable DC electricity. With a 3/8" V-belt pulley, it delivers up to 300 watts and 40 volts DC output, making it ideal for charging 12V deep cycle batteries or powering small DC devices. Its durable metal build and air ventilation ensure efficient cooling during extended use, while its versatility supports educational STEAM projects and sustainable off-grid energy solutions. ## Description This model PPG-B300 generator dynamo is a belt / pulley driven unit which generates a DC Voltage that is directly proportional to the revolutions per minute rate that you spin the shaft at. For instance the following table shows you the generator output based on revolutions per minute: Generator rotational speed DC Voltage Output 500 RPM 3.6V DC Output 750 RPM 4.9V DC Output 1000 RPM 6.0V DC Output 1500 RPM 9.5V DC Output 2000 RPM 12.2 DC Output 2500 RPM 14.5 DC Output 3000 RPM 17.0 DC Output This generator can charge a 12V battery through a blocking diode and a fuse. Or it can charge a battery through a charge controller which has a built in fuse and blocking diode. The PPG-B300 is easiest to install by screwing it down to a piece of plywood and then setting a bike stand on the same piece of plywood. See product photo. You will have to remove the tire from the rear wheel of a bicycle. After the generator is secured atop the piece of plywood then you can use an adjustable powertwist size 3L V-belt to connect the generator to the rear wheel of the bicycle. Please contact us if you have any questions. This generator can also be used to charge a portable solar generator also known as a portable power station. The Voltage output must not exceed the maximum allowed charge Voltage of the portable solar generator / power station. If you would like help on selecting a charging solution that suits your needs please contact us with your questions and a qualified electrical engineer will assist you. This generator can also be used to setup in classrooms to teach students about S.T.E.A.M. science technology engineering art and math. It can be connected to a leaf blower in a vertical position with a beach ball floating when the person riding the bicycle generator pedals the bike. Review: Over Priced! - I bought this motor for a bicycle generator and it works great when used as a "pulley system" but does not work as a "direct drive" by putting the tire directly to the pulley/rotor. My guess is it can't handle the additional RPM's running direct but the motor does work well with the pulley. The problem I have is the motor I received does not look like the motor pictured. In fact, it looks identical to other motors sold on desertcart for electric scooters, search (Electric motors: Razor E300 & Ampflow P40-250). These motors seem to have the same spec's as this motor and are selling for around $50. In regards to the "specs", this motor is advertised in the product description as being capable of producing 40v, yet the spec's listed below the product rate the motor at 12-24v. (I have reached around 35v without a load with this motor and can charge 24v batteries). DO RESEARCH ON OTHER MOTORS BEFORE PAYING $200 FOR THIS! The back of this motor is cast with a company name of "UNITE MOTOR CO." I bet the same is cast on the back of the less expensive Scooter motors. The scooter motor's come with a gear or cog instead of a pulley but that can be changed. Review: Great product - Performed exactly as described. - This product is excellent. Performed exactly as described. Came with an information sheet describing how to use it. It ran for over 2 hours with no excess heating. It was able to charge multiple 12 volt batteries with no problem. ## Features - Permanent magnet DC Generator - Output Voltage: 0 to 40 Volts DC V-belt pulley size 3L - Nominal Current 15 Amps, Peak Current 20 Amps - Great for charging 12V deep cycle lead acid batteries through charge control - Also works as DC Motor .4 Horse Power ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B001WB3TZ4 | | Additional Features | DC Power Generator | | Best Sellers Rank | #224,033 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #587 in Outdoor Generators | | Brand | Pedal Power Generator | | Brand Name | Pedal Power Generator | | Color | Black | | Current Rating | 15 Amps | | Customer Reviews | 3.6 out of 5 stars 14 Reviews | | Engine Power Maximum | 300 Watts | | Engine Type | electric | | Fuel Type | None (or human, wind, hydro) | | Ignition System Type | magnet | | Included Components | 6mm Bolts, 2 inch pulley, 300 Watt Generator (Peak power is 300 Watts) , Typical power is 150 Watts. | | 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 | Camping | | 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) - **Included Components:** 6mm Bolts, 2 inch pulley, 300 Watt Generator (Peak power is 300 Watts) , Typical power is 150 Watts. - **Item Weight:** 8 Pounds - **Output Wattage:** 300 Watts - **Power Source:** air-powered - **Recommended Uses For Product:** Camping - **Special Feature:** DC Power Generator - **Voltage:** 40 Volts - **Wattage:** 300 watts ## Images ![300 Watt Permanent Magnet DC Pulley Generator 3/8" V-Belt Drive Pedal Power Pulley Dynamo with air ventilation holes PPG-PM300-P - Image 1](https://m.media-amazon.com/images/I/61n1mLKbGpL.jpg) ![300 Watt Permanent Magnet DC Pulley Generator 3/8" V-Belt Drive Pedal Power Pulley Dynamo with air ventilation holes PPG-PM300-P - Image 2](https://m.media-amazon.com/images/I/71g+SdyXzML.jpg) ![300 Watt Permanent Magnet DC Pulley Generator 3/8" V-Belt Drive Pedal Power Pulley Dynamo with air ventilation holes PPG-PM300-P - Image 3](https://m.media-amazon.com/images/I/51cHPXlNT0L.jpg) ![300 Watt Permanent Magnet DC Pulley Generator 3/8" V-Belt Drive Pedal Power Pulley Dynamo with air ventilation holes PPG-PM300-P - Image 4](https://m.media-amazon.com/images/I/61s1v+v6PRL.jpg) ![300 Watt Permanent Magnet DC Pulley Generator 3/8" V-Belt Drive Pedal Power Pulley Dynamo with air ventilation holes PPG-PM300-P - Image 5](https://m.media-amazon.com/images/I/615TQX+r2qL.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 ## Customer Reviews ### ⭐⭐⭐ Over Priced! *by S***E on June 12, 2014* I bought this motor for a bicycle generator and it works great when used as a "pulley system" but does not work as a "direct drive" by putting the tire directly to the pulley/rotor. My guess is it can't handle the additional RPM's running direct but the motor does work well with the pulley. The problem I have is the motor I received does not look like the motor pictured. In fact, it looks identical to other motors sold on amazon for electric scooters, search (Electric motors: Razor E300 & Ampflow P40-250). These motors seem to have the same spec's as this motor and are selling for around $50. In regards to the "specs", this motor is advertised in the product description as being capable of producing 40v, yet the spec's listed below the product rate the motor at 12-24v. (I have reached around 35v without a load with this motor and can charge 24v batteries). DO RESEARCH ON OTHER MOTORS BEFORE PAYING $200 FOR THIS! The back of this motor is cast with a company name of "UNITE MOTOR CO." I bet the same is cast on the back of the less expensive Scooter motors. The scooter motor's come with a gear or cog instead of a pulley but that can be changed. ### ⭐⭐⭐⭐⭐ Great product - Performed exactly as described. *by A***E on December 30, 2022* This product is excellent. Performed exactly as described. Came with an information sheet describing how to use it. It ran for over 2 hours with no excess heating. It was able to charge multiple 12 volt batteries with no problem. ### ⭐⭐⭐⭐ Add a grid-tie inverter? :-) *by N***E on February 15, 2012* It seems to me that this $110 grid-tie inverter can make your electric meter run backwards if you are not using more than 300 watts of electricity in your house: http://www.amazon.com/Inverter-Converter-System-10-8-30V-Efficiecy/dp/tech-data/B005N2WHDI/ref=de_a_smtd And why buy the $499 kit, when the generator and mounting plate and adjustable belt and bike stand costs only add up to $429? Nick ## 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.tn/products/10059624-300-watt-permanent-magnet-dc-pulley-generator-3-8-v](https://www.desertcart.tn/products/10059624-300-watt-permanent-magnet-dc-pulley-generator-3-8-v) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-13*