Solarika.co.uk
20W 12V polycrystalline solar panel with 2m cable
Art: BST-20P
Description
PHOTONIC UNIVERSE SOLAR PANEL
20W 12V Polycrystalline Solar Panel
Reliable Off-Grid Power | 12V Battery Charging | Model: BST-20P
The Photonic Universe 20W 12V Polycrystalline Solar Panel (model BST-20P) offers a dependable and sustainable power solution for various off-grid applications. Engineered for enduring outdoor use, this highly efficient and fully waterproof panel provides a consistent source of clean electricity, ideal for charging 12V batteries or directly powering small devices in remote locations.
Its robust construction, featuring high-performance polycrystalline solar cells and a sealed aluminium frame, ensures longevity and reliable operation across diverse weather conditions, making it a practical choice for UK homeowners, off-grid users, and small businesses seeking energy autonomy.
IMPORTANT NOTE: A solar charge controller is essential for charging 12V batteries to prevent overcharging and ensure efficient power transfer.
Key Features
| ▶ 20W Peak Power — Ensures consistent energy generation for your needs. |
| ▶ 12V System Optimised — Perfectly suited for charging and maintaining 12-volt batteries. |
| ▶ Polycrystalline Cells — Incorporates high-performance cells known for efficiency and durability. |
| ▶ 2-Metre Cable Included — Conveniently attached to the waterproof junction box for simplified connectivity. |
| ▶ Waterproof Design — Guarantees dependable operation across all challenging weather conditions. |
| ▶ Sturdy Aluminium Frame — Constructed for exceptional longevity in continuous outdoor exposure. |
| ▶ Pre-Drilled Mounting Holes — Equipped with 4 holes for straightforward and secure installation. |
| ▶ Lightweight Design — Weighs just 2.0 kg, enhancing ease of handling and positioning. |
Technical Specifications
| Parameter | Value |
|---|---|
| Peak Power (Pmax) | 20W |
| Maximum Power Voltage (Vmp) | 17.5V |
| Maximum Power Current (Imp) | 1.14A |
| Open Circuit Voltage (Voc) | 21.6V |
| Short Circuit Current (Isc) | 1.23A |
| Power Allowance Range | +/- 3% |
| Dimensions (L x W x D) | 485 x 345 x 25 mm |
| Weight | 2.0 kg |
System Integration & Expansion
This 20W polycrystalline solar panel is designed for straightforward integration into new or existing 12V solar power systems. When charging a 12V battery, a solar charge controller is a critical component to protect your battery from overcharging and ensure optimal performance.
For those looking to increase their power capacity, this panel can be easily connected in parallel with another 20W solar panel. Simply connect the positive (+) terminals together and the negative (-) terminals together, then integrate the combined array into your solar charge controller. This method allows you to effectively double your output to 40W, enhancing your renewable energy capabilities.
Typical Applications
| Application | Description |
|---|---|
| Off-Grid Sheds & Outbuildings | Powering lights, small tools, or charging batteries in garden sheds and remote structures. |
| Caravans, Motorhomes & RVs | Maintaining leisure batteries to power onboard appliances and lighting during travel. |
| Marine Vessels | Providing trickle charging for boat batteries or powering navigation lights and small electronics. |
| Remote Monitoring & Lighting | Ideal for small-scale remote power needs such as security cameras, electric fencing, or outdoor lighting. |
Robust Design Features
The Photonic Universe 20W solar panel is built for durability and reliable performance in outdoor environments. It features a comprehensively waterproof design, ensuring dependable operation in all weather conditions. The panel is encased in a sturdy, sealed aluminium frame, engineered for exceptional longevity and resistance to continuous outdoor exposure.
Common Questions
Do I need a solar charge controller with this panel?
Yes, if your primary objective is to charge a 12V battery, a solar charge controller (also known as a regulator) is an indispensable component. It safeguards your battery against overcharging and ensures efficient, regulated power transfer.
What are the mounting considerations for this panel?
The integrated junction box on the rear of the panel protrudes approximately 0.5cm beyond the main frame. For optimal installation and crucial cooling performance, it is highly recommended to maintain a clearance of 1.0 to 1.5cm between the panel and any flat mounting surface.
Can I expand my solar power system with this panel?
Yes, you can easily augment your power capacity by connecting this additional panel in parallel with an existing 20W panel. This allows you to double your output to 40W, simply by connecting positive to positive and negative to negative terminals, then integrating into your solar controller.
Installation Notes
- Ensure adequate ventilation and clearance (1.0-1.5cm) beneath the panel for optimal cooling.
- Always connect a solar charge controller between the panel and a 12V battery to prevent overcharging.
- Observe correct polarity when wiring: positive to positive, negative to negative.
- Secure the panel using the pre-drilled mounting holes to a stable, weather-resistant surface.
- While an installation manual is not included with the panel itself, detailed wiring diagrams are typically provided with solar charge controllers.
Before You Buy
- Verify that this 20W 12V panel meets your specific power generation requirements.
- Consider the need for a suitable solar charge controller if you intend to charge batteries.
- Check the available mounting space, accounting for the recommended clearance for the junction box.
- Ensure you have the necessary cabling and connectors for integration into your system.
- For complex installations, consider consulting with a qualified solar installer.
All specifications are based on manufacturer data and are subject to standard test conditions. Please verify compatibility with your existing system components before purchase. This product is covered by a 1-year workmanship warranty from Photonic Universe, and the solar cells are guaranteed to maintain at least 90% nominal power for 10 years and 80% for 25 years by the cell manufacturer.
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