With energy storage power supply Outdoor travel energy storage without power supply Support expansion Increase charging power and output voltage MPPT solar controller can also be selected Rechargeable 9-36V lead-acid battery and RV battery. 240W high-efficiency solar foldable bag is durable and more powerful for outdoor sports. It is specially designed to supply power for high-power energy storage. Technology 280% output power built-in voltage regulator chip, charging is more secure and stable output, and the power is worry-free. Self-driving/camping charging anytime, anywhere Using MPPT solar maximum power tracking technology can effectively improve the solar charging speed. Selected wear plates are highly resistant to smaH and sunlight. Light-transmitting, tough, and aging-resistant TPU material makes the solar panel waterproof and mildew-proof. Expand and fold smaller than other products in the industry 10MM foldable design, portable rubber hand-held, one-hand carry Unique black and orange design, small size, elegant and tidy. With outdoor power supply.