3W 12V Polycrystalline Solar Panel Charger with Cable – DIY

3W 12V Mini Portable Solar Panel Charger – Polycrystalline Epoxy Cell with Cable

Power your small devices and batteries anywhere the sun shines with this compact 3W 12V Polycrystalline Solar Charging Panel. Whether you're running a garden light, a small water pump, a fan, or topping up a 9–12V battery or mobile phone, this durable epoxy-sealed solar cell delivers reliable, clean energy day after day. Made in Mainland China.

Why Choose This Solar Charging Panel?

• Exceptional Conversion Efficiency: High-grade polycrystalline silicon cells maximize energy harvest from every ray of sunlight, converting more light into usable power for your devices.
• Outstanding Low-Light Performance: Engineered to maintain energy output even on overcast or cloudy days — your power supply keeps going when you need it most.
• High-Efficiency Polycrystalline Cells: Advanced polysilicon epoxy cell technology sets a new benchmark in compact solar efficiency, delivering impressive output from a pocket-sized panel.
• Minimal Degradation Over Time: Built to last, this panel experiences very little performance loss year after year, making it a smart long-term energy investment.
• Extended Durability: Sealed in tough epoxy resin, it's designed to withstand the elements and provide sustainable solar energy with minimal maintenance.
• Ready-to-Use with Cable: Comes with an attached cable so you can connect it straight to your device or battery — no extra wiring needed.

Technical Specifications

• Material: Polysilicon (Polycrystalline)
• Colour: Black
• Power: 3W
• Voltage: 12V
• Working Current: 0–125mA
• Short Circuit Current: 125mA
• Short Circuit Voltage: 13.5V
• Size: Approx. 115 × 85 × 3 mm (4.53 × 3.35 × 0.12 in)
• Weight: 45 grams
• Compatible With: 9–12V batteries, mobile phones, and small DC-powered devices

Ideal Applications

• Solar garden lighting & pathway lights
• Small home lighting systems
• Solar street lighting
• Outdoor solar advertising displays
• Emergency lights & traffic lights
• Solar water pumps & electric fans
• DIY solar energy projects

What's in the Box

• 1 × 3W 12V Solar Panel with Cable

Please Note: Colours may vary slightly due to monitor settings and lighting conditions. Please allow ±1–2 cm measurement tolerance due to manual measurement.

For more information on solar energy and its environmental benefits, visit the U.S. Department of Energy – Solar Energy Technologies Office.

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Frequently Asked Questions

Q: What devices can this 3W 12V solar panel charge?

A: This compact solar panel is suitable for charging 9–12V batteries, mobile phones, and a wide range of small DC-powered appliances including garden lights, emergency lights, electric fans, solar water pumps, solar street lights, and other low-power devices.

Q: Does this solar panel work on cloudy or overcast days?

A: Yes! The polycrystalline solar cells are specifically engineered for low-light performance, allowing the panel to maintain energy output even under overcast or dimly lit conditions — though peak output is achieved in direct sunlight.

Q: Is this solar panel suitable for DIY projects?

A: Absolutely. The 3W 12V polysilicon solar epoxy cell charger is a popular choice for DIY solar energy projects. Its compact size (approx. 115 × 85 × 3 mm), included cable, and versatile 9–12V compatibility make it easy to integrate into custom solar setups and small home energy systems.

Q: How durable is the solar panel?

A: The panel is sealed in a tough epoxy resin casing that protects the polycrystalline cells from moisture, dust, and minor impacts. It is designed for minimal performance degradation over time, making it a reliable long-term energy solution.