Do I need both? I have a solar panel, do I have to use both?
Who can install 2 ring camera with the solar back up battery ?
Hey @KLove65. If your device is a battery operated device, it will need a fully charged battery put into it and need to still be charged at times/inserted 24/7! The device needs the battery to operate, as the solar charger will be charging the battery within it. 
Hi @Mrlee206, have you heard of Amazon Home Services? If you need help with an installation, I recommend to check them out!