Sometimes we all need to recharge our batteries whether we are camping, wanting to go off the grid, or are just looking to power some appliances. Our Renogy 100W Monocrystalline Bundle comes with components that you will need to expand on a system you may already have, or just need some items to complete your system. Our 100W Monocrystalline solar panel, 9In Mc4 Adaptor Kit, and 30A PWM charge controller are included. Keep in mind that this kit allows for the charge controller to be close to the solar panel so depending on your situation, you may still need an extension cable or longer wiring. This bundle kit can be the perfect option for creating an off-grid solar system! Please Note: This is a Positive Ground Charge Controller. If grounding is necessary, it must be completed on the positive line. If the controller is to be used on a vehicle which has battery negative on the chassis, loads connected to the controller must not have an electrical connection to the vehicle body. If you want to connect this solar system to a negative ground battery bank, you can upgrade to the ViewStar Charge Controller, or choose Renogy RV kit.