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4W Mini Solar Panel with 5V/6V/9V/12V DC Output

LinkSolar  |  SKU: LS-SP4W-MV5
$4290 USD
Free shipping on orders up to 2 kg to our delivery countries; rates for orders over 2 kg and up to 25 kg are calculated at checkout. For orders over 25 kg or destinations unavailable at checkout, contact us for a shipping quote before checkout.

Features
  • 4W monocrystalline solar panel.
  • Select a 5V, 6V, 9V or 12V regulated DC output version.
  • Supports up to six 18650 cells in parallel; batteries are not included.
  • Micro-USB input provides an additional charging option.

Product Description

The 4W mini solar panel is a compact off-grid power solution with selectable 5V/6V/9V/12V DC output, built-in protection electronics, and support for up to 6×18650 batteries. It is suitable for outdoor cameras, small sensors, DIY electronics, and other low-power applications.

With a high-efficiency monocrystalline 4W module, clear LED status indicators, and a fixed mounting bracket, this panel is designed for simple low-power solar setups that need compact size, flexible output, and straightforward installation.

rear view of solar panel showing LED indicators and mounting bracket

Details & Specs

Item Specification
Solar Cell Type Monocrystalline silicon
Solar Power 4W
Conversion Efficiency Approx. 23%
Panel Output (direct) ~6.5V under load, ~7.2V open circuit
Panel Output Current (max) Approx. 600mA
System Output Voltages 5V / 6V / 9V / 12V
System Output Currents (rated) 5V 2A / 6V 1.5A / 9V 1.2A / 12V 1A
Input / Output Connectors Micro USB input, 5.5 × 2.1 mm DC output (5521)
Battery Type 18650 lithium cells (supports KC-compliant cells)
Battery Slots Up to 6 pcs, parallel connection
Supported Pack Capacity Up to approx. 19800mAh (6 × 3300mAh), batteries not included
Charge Voltage Requirement 4.5V < charge voltage < 5.5V
Over-charge Protection Approx. 4.28V per cell
Over-discharge Protection Output stops at approx. 3.3V per cell; hardware cutoff at approx. 3.0V per cell
Balance Charging Supported
Indicators Red PV generation LED, green external charging LED, 1 × battery level LED, low voltage indicated when red LED turns off
Environmental Operating humidity ≤ 90% RH
Ingress Protection IP66
Weight Approx. 0.5 kg (excluding batteries)
Package Size Approx. 20 × 16 × 6 cm

Note: 18650 batteries are not included. 

solar panel LED indicators showing battery, charging and output status

How to Use

  • Install up to six 18650 cells (if needed) in the internal battery bay, observing correct polarity and using cells with similar capacity and condition.
  • Mount the 4W mini solar panel using the included bracket, tilting it toward the sun for best exposure.
  • Connect your device to the 5.5 × 2.1 mm DC output port and select the appropriate 5V/6V/9V/12V output on your system if applicable.
  • Let the panel charge the battery pack under sunlight; typical full charge time is around 8–12 hours of strong sun with the recommended battery pack.
  • You can also top up the battery pack via a suitable 5V USB power adapter (4.5–5.5V) through the Micro USB input when sunlight is not available.

Who It’s For

This 4W mini solar panel is ideal for DIY makers, hobbyists, and anyone needing a small off-grid power source for low-power 5V–12V electronics. Use it for garden projects, small sensors, experimental IoT devices, or as a compact backup supply where running mains power isn’t practical.

IP66 waterproof solar panel powering hunting or trail camera

Care & Maintenance

  • Keep the solar surface clean and free from dust or shading to maintain efficiency.
  • Use only recommended 18650 cells and avoid mixing old and new batteries in the same pack.
  • Ensure all seals are properly closed to maintain the IP66 rating in outdoor installations.
  • Disconnect loads and store in a dry place if the panel will not be used for an extended period.

Package Contents

Solar Panel x 1
Mounting Bracket x 1
Screw x 1
Instruction Manual x 1
Screw Accessory Pack x 1

Buyer questions

Is this a bare panel or a complete power unit?

It is a panel with built-in electronics: a 4W monocrystalline module, a bay for up to six 18650 cells (not included) and a selectable 5V / 6V / 9V / 12V DC output — your device sees a regulated system voltage, not the raw panel output of about 6.5V under load.

Will it run an outdoor or trail camera?

The listed suitable uses include outdoor cameras, small sensors and DIY electronics, and the housing is rated IP66. Whether one 4W module sustains your camera depends on its average draw — check the camera's standby and streaming consumption before committing.

How long does a full charge take, and can I top up without sun?

Typical full charge is around 8–12 hours of strong sun with the recommended battery pack. Without sun, charge the pack through the Micro USB input from a suitable 5V adapter (4.5–5.5V).

What is in the box?

Solar panel ×1, mounting bracket ×1, screw ×1, instruction manual ×1 and a screw accessory pack. 18650 batteries are not included.

LinkSolar supplies mini solar panels to B2B buyers; ships from China.

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