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Photonic Universe

Off-Grid Solar Lighting System with 50W solar panel, 4 LED Lights, Solar Charge Controller and Lithium Battery

Off-Grid Solar Lighting System with 50W solar panel, 4 LED Lights, Solar Charge Controller and Lithium Battery

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Off-Grid solar lighting system with 50W solar panel, solar controller, 4 x 5W energy saving LED lights, control unit with a lithium battery and cables, connectors and switches.

SPECIAL NOTICE : If you are purchasing this part for a self build project, please see our terms & conditions. FULFILLED BY PHOTONIC UNIVERSE : This product is fulfilled by Photonic Universe, our Solar partner.



This solar lighting system is ideal for places with no mains electricity such as outhouses, sheds, garages, farms, stables, as well as for camping, travel and any outdoor activities (e.g. a for a yurt). The system is fully independent from the grid and works purely based on sunlight energy or the power stored in the battery.

During the daytime, the 50W solar panel charges a 12V battery inside the control unit, which then provides power to the 4 x 5W 12V LED lights connected via front sockets on the control unit. In addition, there is a standard 5V USB socket for charging mobile phones and USB compatible devices.

The control unit has a built-in 18Ah Lithium battery with an automatic solar charge controller to manage the charging process and prevent overcharging. The solar input can take 18-25V DC power from any suitable solar panel, or charge from the mains using the SL-CH-3A mains adapter, and the battery can provide enough energy to power 4 LED lights continuously for 9-10 hours, or twice as long if only two LED lights are connected.

The system is very convenient to use and install: the solar panel adapter cable has two standard MC4 connectors for secure connection with the panel output, and each LED light comes with a 5m cable with an On/Off switch. All cables come with connectors for a quick "plug and play" installation.

Details & Specification


System specifications:

  • System voltage: 12V
  • Battery capacity: 18Ah
  • LED lights power: 5W
  • Length of LED lights cables: 5m
  • USB output current: 0.8A
  • Max DC output current: 3A
  • Control unit case size: 220 x 130 x 150 mm
  • Control unit case weight: 6.86 kg
  • Max solar input power: 100W
  • Solar input voltage: 18-25V


Solar panel specifications:

  • Peak power: 50W
  • Maximum power voltage: 20.2V
  • Maximum power current: 2.48A
  • Open circuit voltage: 23.9V
  • Short circuit current: 2.63A
  • Power allowance range: +/- 3%
  • Dimensions: 590 x 505 x 25mm
  • Weight: 4.2 kg
  • 4 mounting holes 6 x 9 mm
  • 2 x 5m of high quality single core solar cable 2.5mm cross section
  • Male and female MC4 connectors attached


This product is covered by a 1 year manufacturer warranty. For more information please refer to our Terms and Conditions.

In addition, 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 is very easy: the solar panel or mains adaptor should be connected to the charging socket at the front side of the control box via the correct adaptor wire (included), and 4 x LED light cables should be connected to the front 12V sockets. Then you should turn the control unit switch to ON and the battery will begin charging. Each LED light comes with a separate On/Off switch for your convenience.

If you need help with installation or have any technical questions we can provide FREE support - please contact us by email or phone (see Contact Us page for more information).




The following documents are available to download:

User manual for Photonic Universe 18Ah Lithium lighting kit (SL-L18AH)


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