NGC solar batteries are brand-guaranteed, to ensure that each battery has been strictly inspected and tested by our factory before it can be sold. And do not make any false or deceptive labels, and will not label low power as high power to deceive customers. However, some merchants on the market will forge power and capacity, resulting in extremely poor results for many users, and cannot guarantee the safety of the product. But our NGC will not. We must ensure that each solar battery is of high quality, high efficiency and sufficient capacity. This is the difference between NGC solar batterys and ordinary solar batterys. So when buying solar batterys, you must see the importance of choosing a brand.