Yes, you can use 4 or 8 rechargeable AA batteries as backup. 

It comes with 2 rechargeable batteries. You can plug the cord into the camera itself to charge them. 

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 

hello the trripod could be compatible with dslr and micro single cmaera body.