BougeRV's 400W bifacial solar panel features 10BB cell design which utilizes ten busbars to collect and transmit the electrical current generated by the solar cells, resulting in a significant boost in overall performance. This bifacial solar panel features a transparent backside, allowing it to absorb solar energy from both sides, increasing the solar output by up to 30%. This is an efficient 400 watt solar panel that is user-friendly, easy to install, and provides maximum output.