Cleaning solar panels just got way easier with this electric brush system! The 5.5 meter telescopic pole means you can reach most rooftop panels safely from the ground - no more risky ladder climbing. It comes with a lithium battery so you're not tethered to an outlet, plus a 24V charger to keep it powered up. The double brush heads rotate automatically in opposite directions, covering about 65cm width per pass - way faster than hand scrubbing! The bristles are polyethylene, stiff enough to remove dirt and bird droppings but soft enough not to scratch your panels. The aluminum alloy poles are lightweight but strong, and they lock securely at whatever length you need. There's a 15-meter water hose included so you can rinse while you clean. Perfect for both solar panels and windows! ZNZHNSI has been in the solar business for 10 years, so they know what works. The backpack makes carrying everything super convenient. Setup is pretty straightforward, and the motor has good power for tackling stubborn grime. Much better than paying for professional cleaning services every few months. Your panels will work more efficiently when they're clean, so this thing basically pays for itself over time!