This 20W solar panel is waterproof and highly efficient, making it ideal for permanent outdoor use. It can provide free power directly to devices like fans or lights, or it can charge a 12V battery to power numerous devices in locations such as sheds, boats, or camper vans. The durable polycrystalline solar cells and sealed aluminum frame ensure long-lasting, high-efficiency performance, while the waterproof design allows for use in all weather conditions. The panel comes with a 2m cable attached to the waterproof junction box at the back.

Please note that the junction box goes about 0.5cm beyond the frame, so there must be some space left between the frame and flat surface when mounting the panel (note 1.0 - 1.5cm space under the panel typically recommended for cooling).

If you plan to use this solar panel for charging a 12V battery, you will need a solar charge controller/regulator. If you don't have one, you can purchase it from our shop category with solar charge controllers. If you already own one of our 20W solar panels or kits with a solar controller, you can enhance the power to 40W by adding this panel in parallel to the existing 20W solar panel (connecting 2 panels: "+" to "+", "-" to "-" and then to the solar controller). Here are the solar panel specifications:

- Peak power: 20W

- Maximum power voltage: 17.5V

- Maximum power current: 1.14A

- Open circuit voltage: 21.6V

- Short circuit current: 1.23A

- Power allowance range: +/- 3%

- Dimensions: 485 x 345 x 25 mm

- Weight: 2.0 kg

- 4 mounting holes

- 2m cable attached

The product is covered by a 1-year workmanship warranty provided by Photonic Universe. Defective items will be repaired or replaced at our discretion. Additionally, the solar cells are guaranteed to produce at least 90% of nominal power in 10 years after purchase and at least 80% of nominal power in 25 years after purchase. This warranty is provided by the manufacturer of solar cells.

Installation: This solar panel does not include an installation manual as it needs to be connected to other devices such as a solar charge controller or inverter, which typically have a manual. If you plan to use this panel for charging a 12V battery, we recommend purchasing it with one of our solar charge controllers. All our solar charge controllers include an instruction manual that explains the installation in detail and contains wiring diagrams. If you need help with installation or have any technical questions, we provide FREE support – please contact us by email or phone.

20W 12V polycrystalline solar panel with 2m cable