The Cell Efficiency can reach 22%. The bypass diodes ensure that the panel has an excellent performance in a low-light environment and the TPT back sheet dissipates excess heat to ensure smooth output performance. Solid QualityAdvanced encapsulation material with multi-layered sheet laminations protects cells from physical damage and distortion, improving cell performance and providing a long service life. Smart FunctionThe Wanderer PWM Charge Controller is compatible with four different types of batteries: Sealed, Gel, Flooded, and Lithium batteries. It also features advanced 4-stage charging (bulk, boost, float, and equalization) to ensure your battery is efficiently and safely charged to 100%.Full System ProtectionThe Wanderer PWM Charge Controller has a number of built-in protections to safeguard your systems, such as reverse polarity protection, battery overcharging protection, overload protection, and short circuit protection. Ready to InstallThis 100w Solar Panel Kit includes all of the equipment necessary for building a new system. The included cables, Z-brackets, and pre-drilled holes on the back frame of the panel allow fast and secure mounting. With the Wanderer Li 30A PWM Charge Controller, the kit can meet your further power needs by adding more of the same solar panels to expand up to 400W. This item is in the category "Home & Garden\Home Improvement\Electrical Supplies\Alternative Energy Supplies\Solar Power Supplies\Solar Panels & Kits". The seller is "lxecommerce_4" and is located in this country: US. This item can be shipped to United States.