18W Portable Solar Battery Maintainer Charger


  • Using High Efficiency Sunpower Solar Cell: made of premium quality solar panel with high efficiency Sunpower Maxeon Solar Cells of 22.5%;
  • Bendable&Lightweight&Durable:the panel is semi flexible ,and weighs only 0.37KG (370g) for easy transport ;ETFE Coating makes sure the panel has a long service life,and this solar panel is water resistant and heat resistant;
  • Car Battery Maintainer:output voltage of 18V and 18 watts of energy; perfect for maintaining 12 Volt batteries of automobile, motorcycle, tractors or snowmobile;
  • Charge via Cigarette lighter Plug:no need to open the car hood, you can charge the car battery directly using cigarette lighter plug.




  • Cell Type:Sunpower Solar Cell
  • Solar Cell Efficiency: 22.5%
  • Maximum Power at STC*(Pmax):     18 W
  • Optimum Operating Voltage (Vmp):   18 V
  • Optimum Operating Current (Imp):   1 A
  • No-Load Voltage: 18-23V DC
  • Surface Coating: durable, high transmittance ETFE film
  • Product Dimensions: 420 x 280 x 2.3mm
  • Product Net Weight: 0.37KG
  • Working Temperature: -20°C ~ 65°C/ -4°F ~ 149°F
  • Standard Test Condition(STC*) : Irradiance 1000W/m2, Temperature 25°C, AM =1.5


  • This Solar Charger offers you 2 ways of charging:

    1. Simply plug the included cigarette lighter plug in the socket and place the panel facing the direction with the most sunlight possible.

    2. You can also use the crocodile clips to connect it directly to the battery. You can mount the panel on your windshield.

  • The unit is not for charging your vehicle’s dead battery. It’s best as a solar battery maintainer that keeps your battery charged to lengthen its life expectancy;
  • At the meantime, it is suggested to unplug the charger at night, just in case the blocking diode doesn’t prevent all reverse discharge.

Package includes:

  • 1 x 18W  Solar Battery Maintainer Charger
  • 1 x Crocodile Clips (Wire 1.5m)
  • 1 x Cigarette Lighter Plug (Wire 1.5m)
  • 1 x User Manual