---
product_id: 255915046
title: "4M 3649 Green Science Windmill Generator"
brand: "4m"
price: "KSh10418"
currency: KES
in_stock: true
reviews_count: 4
url: https://www.desertcart.co.ke/products/255915046-4m-3649-green-science-windmill-generator
store_origin: KE
region: Kenya
---

# Easy assembly, single-piece build 100% battery-free energy Wind-powered LED glow 4M 3649 Green Science Windmill Generator

**Brand:** 4m
**Price:** KSh10418
**Availability:** ✅ In Stock

## Summary

> 🌱 Light up curiosity with the breeze of innovation!

## Quick Answers

- **What is this?** 4M 3649 Green Science Windmill Generator by 4m
- **How much does it cost?** KSh10418 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/255915046-4m-3649-green-science-windmill-generator)

## Best For

- 4m enthusiasts

## Why This Product

- Trusted 4m brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Setup:** No complex assembly or batteries needed—just pure, hands-on discovery from the start.
- • **Compact & Portable:** Lightweight and sized for easy handling, making science exploration possible anywhere.
- • **Harness the Power of Wind:** Experience renewable energy firsthand with a wind-driven LED that lights up without batteries.
- • **Eco-Friendly STEM Learning:** Engage kids in sustainable science that sparks curiosity about the environment and green tech.
- • **Perfect for Young Innovators:** Designed for children 8+, it’s the ideal introduction to mechanical principles and alternative energy.

## Overview

The 4M 3649 Green Science Windmill Generator is an educational toy that introduces children aged 8 and up to renewable energy concepts through a hands-on wind-powered LED model. It requires no batteries, promotes eco-friendly learning, and offers a simple, single-piece assembly to ignite young minds about sustainable science.

## Description

3649 Green Science Windmill Generator

## Features

- Build a windmill generator
- Help children to understand mechanical principals
- Explore alternative energy in a fun way
- Power the LED using wind
- Suitable for children aged four and over

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product Dimensions | 20.96 x 13.97 x 8.26 cm; 154 g |
| Manufacturer recommended age | 8 years and up |
| Item model number | 3649 |
| Educational Objective(s) | Development of practical skills and understanding renewable energy |
| Language: | English, Polish |
| Number of Puzzle Pieces | 1 |
| Assembly Required | No |
| Batteries Required? | No |
| Batteries Included? | No |
| tech_spec_battery_description_toys | No Battery |
| Material Type(s) | Plastic |
| Remote Control Included? | No |
| Radio Control Suitability | indoor |
| Color | Assorted Colours |
| Release date | 6 July 2010 |
| ASIN | B0016PBH9Q |

## Product Details

- **Size:** 1 EA
- **Brand:** 4M
- **Theme:** Renewable energy
- **Age range (description):** Kid
- **Item dimensions L x W x H:** 21 x 14 x 8.3 centimeters

## Images

![4M 3649 Green Science Windmill Generator - Image 1](https://m.media-amazon.com/images/I/61MUHgV5u8L.jpg)

## Available Options

This product comes in different **Customer Package Type, Style** options.

## Questions & Answers

**Q: What kind of functions develop this robot? What does it do?**
A: It goes forward.  That is it.   It took my son and I about 10 minutes to build it, and it ran for about 30 minutes before the battery need to be cleaned, and rebuilt.

**Q: How many watts is the LED lightbulb?**
A: The power depends how fast you spin the windmill.The forward voltage drop of an LED is typically 2 to 3 V. Let's say 2.5V.A current of 20 mA (0.02A) will produce a bright light. That's probably close to what you get with a fairly strong wind turning your windmill.The power dissipated in the LED in this case is 2.5 x 0.02 = 0.05W = 50 mW.

**Q: Is included the elements, for example charcoal, aluminium or salt? And is included some pieces of science kit as tube, ect?**
A: It a simple kit,  included small slides aluminum, carbon, works fine but is small,  from kids 4 old years. Needs salt and water not included in the box.

**Q: Does this only work once? My son can't get it to go a second time. Wondering what to do.**
A: It will work multiple times. Make sure after each use to clean the battery parts with water and allow to dry before reassembling

## Customer Reviews

### ⭐⭐⭐⭐⭐ Recommended
*by F***I on 24 August 2020*

Very good , working perfectly

### ⭐⭐⭐⭐ Ok
*by E***A on 17 January 2021*

Quite light but great for learning

### ⭐⭐⭐⭐ Worthy
*by H***. on 23 July 2020*

Not so well made. But for kids it’s perfect. For the price I would says it’s worthy.

## Frequently Bought Together

- 4M Toysmith, Green Science Windmill Generator Kit, DIY Science Kit With LED Lights, For Boys & Girls Ages 8+ (Packaging May Vary)
- Delinx Fun Physics Science Experiment Kit: Windmill & Hand-cranked Generator, Solar Power, Basic Electric Circuit Learning, DIY Educational STEM Project for Kids & Teens, Girls & Boys
- 4 in 1 Solar Power & Electric Motor STEM Kits,Science Experiment Projects for Kids Beginners,Electronic Assembly Solar Powered Toy Kit,DIY Educational Engineering Experiments for Boys and Girls

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**Shop now:** [https://www.desertcart.co.ke/products/255915046-4m-3649-green-science-windmill-generator](https://www.desertcart.co.ke/products/255915046-4m-3649-green-science-windmill-generator)

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*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-02-22*