Yes, it's detachable. 

Hello, thank you for your information, each of our 60W solar panels were tested before leaving the factory, the experimental data is much greater than 60W ,product quality and service, we always put first, we suggest you use other brands of generators to try again. There are many factors that affect the charging efficiency of solar panels, such as: weather conditions, whether the DC connector matches, the generator's own ability to accept, etc.Thanks &Best regards 

No, there is no built-in battery in this solar panel. But it supports all the power banks charging, so that you can store power for using. 

Yes, the hunting camera comes with a solar panel with a 3m cable, the solar panel can be adjusted to suit the location and How do you get the electricity? How much capacity does the hunting camera have The product itself has a battery capacity of 7800mAh and is powered by the solar panel. Please fully charge it with the adaptor before use. You do not need to remove it often to charge it in summer and in sunny places 

Yes, but you need to contact us to purchase the bracket and extension cable separately, the extension cable is 2M