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Suntech 20Watt 12Volt Solar Module


The STP020-12 is a 20 watt, 12 volt solar panel, great for travelers and industrial uses alike. The STP020-12 provide supplemental power to RV, marine or caravan batteries. This model is ideal for running lights and small appliances such as TVs, VCR's, computers, radios and water pumps.


The STP020-12 modules are composed of 36 multi crystalline silicon solar cells of similar performance, interconnected in series to obtain the 12 volt output.


A heavy-duty anodized aluminium frame provides strength and convenient mounting access. For each 18 cells series strings, one bypass diode is installed. Cells are laminated between high transmissivity, low-iron, 3mm tempered glass and sheet of tedlar-polyester-tedlar 'TPT' material by two sheets of ethylene Vinyl acetate 'EVA'. This protects against moisture penetrating into the module.




  • 36 high-efficiency Suntech Power Silicon Solar Cells
  • More power in peak hours through Suntech Power Cells.
  • Optimized module performance with Nominal Voltage 12 V DC
  • Bypass diodes to avoid hot-spot effect
  • Cells are embedded in a sheet of TPT and EVA
  • 3.2 mm high transmissive low-iron, tempered glass
  • Unique esthetic appearance of cells
  • Attractive, stable,heavy duty anodized aluminum frames with convenient
  • mounting-access, for high wind-pressure and snow-load
  • The backside frames are equipped with drainage holes. So we eliminate the
  • risk that rain or snow water may accumulate in the frame lumen and freeze or even bend the frame in cold season
  • Pre-cabled with fast-connecting systems
  • Customer-desired packing



  • 25 years Limited Power Warranty

Technical Specifications


Electrical Characteristics
Open circuit voltage - Voc 21.4 V
Optimum operating voltage - Vmp 16.8 V
Short circuit current - Isc 1.21 A
Optimum operating current - Imp 1.19 A
Operating temperature -40 to +85°C
Maximum system voltage 1000 V DC
Mechanical Characteristics
Cell multi-crystal Silicon 125mm x 31.25mm
No. of Cells and Connections 36 Cells in series
Dimensions 656 x 306 x 18 mm
Weight 2.5 kg

Quality and Safety


  • Certifications: IEC 61215, TUV class II, CE
  • Manufactured in ISO 9001:2000 standard


  • Model: STP020-12
  • Shipping Weight: 2.5kg
  • Manufacturer:
    Suntech Power