DIY Solar Bottle Lamp V2.0 Kit
Do you know we can make a lamp that charges during the day and gives light at night? 🌙
In this project, we will build a simple solar lamp using a solar panel, battery, LED, and a bottle. It is safe, easy, and a great way to learn how solar energy works.
🛠️ Materials Needed
1 Small Solar Panel (5V)
1 Rechargeable Battery (3.7V Li-ion or AA)
1 Diode (to stop current from going back to the panel)
1 LED (white or warm light)
1 Resistor (220Ω – 470Ω to protect LED)
Wires
Empty Plastic Bottle (as lamp cover)
Switch (optional)
⚡ Circuit Diagram (Basic Idea)
[Solar Panel +] —–>|—- [Battery +]
Diode
[Solar Panel -] ———— [Battery -]
[Battery +] —- [Resistor] —- [LED +]
[Battery -] ——————– [LED -]
👉 Daytime: The solar panel charges the battery.
👉 Nighttime: The battery powers the LED.
📝 Step-by-Step Instructions
Fix the solar panel on top of your bottle cap.
Connect the solar panel wires:
Solar panel positive → Diode → Battery positive.
Solar panel negative → Battery negative.
Connect the LED:
Battery positive → Resistor → LED positive.
Battery negative → LED negative.
Put the LED inside the bottle (it will glow like a lamp).
Place the bottle in sunlight during the day.
At night, the LED will glow using the stored solar energy. 🌟
Video
🎓 What You Learned
Solar panels change sunlight → electricity.
A battery stores that energy.
An LED uses that energy to give light at night.
The diode stops the battery from sending power back to the solar panel.
✅ Safety Tips
Use only rechargeable batteries.
Do not short-circuit the battery.
Keep bottle lamp away from water.
Conclusion
This DIY Solar Bottle Lamp is a great way to learn about renewable energy and sustainability. With just a few parts, you can make your own lamp that charges in the day and lights up at night.
Try more experiments:
Use different bottle shapes for design.
Try different LED colors.
Add a switch to control the light.